Hi All,
Sorry for the long post, but hopefully it will be useful.
I'm new to Mandelbulber, I was just introduced to it about a week ago by a colleague, so I can't rule out that what i'm experiencing is because I'm doing something wrong.
I downloaded Mandelbulber 2.06 on to Mac 1 to try it out, I noticed the the Client / Server NetRender option in the Rendering Engine section, so I downloaded Mandelbulber 2.07 (not realising the differnt versions at first) on to Mac 2 to try out NetRender.
When I connected Mac 2 (V 2.07) as a client to Mac 1 (V 2.06) as a server Mandelbulber on Mac 1 (Server only) crashed (it didn't matter whether i used IP (V4) or hostname), So then I tried it in the other direction Mac 1 (V 2.06) as a client to Mac 2 (V 2.07) as a server which also crashed.
At this stage I noticed the difference in version numbers, so I updated Mac 1 to V 2.07, at this point I was able to successfully use the NetRender option in both directions.
I then wanted to add another machine to the "render farm", so I downloaded Mandelbulber 2.07 (this time making sure it was the same version) to my Linux Mint (rosa) machine (Mint 1), I compiled and installed following the instructions.
When I connected Mint 1 (V 2.07) as a client to Mac 1 (V 2.07) as a server and Mandelbulber (Server only) crashed. I then tried Mint 1 (V 2.07) as a client to Mac 2 (V 2.07) as a server, same result.
Finally I tried Mac 1 (V 2.07) as a client to Mint 1 (V 2.07) as a server, again Mandelbulber (Server only) crashed.
So my observation is that Mandelbulber's NetRender option only seems to work when you use the same version and the same operating system.
I hope this information is useful, and that in future you will be able to make NetRender more robust, and able to to produce a meaningful error message rather than crash when incompatible versions are connected. I also hope that in future you can make NetRender work with different versions and different OS's.
Below is the crash report from Mac 1 (V 2.07) as a server when Mint 1 (V 2.07) is the client:
Dave.
Process: mandelbulber2 [12643]
Path: /Applications/mandelbulber2.app/Contents/MacOS/mandelbulber2
Identifier: com.bermarte.mandelbulber2
Version:
Code Type: X86-64 (Native)
Parent Process:
[1]
Responsible: mandelbulber2 [12643]
User ID: 501
Date/Time: 2016-03-22 18:43:54.536 +1000
OS Version: Mac OS X 10.11.3 (15D21)
Report Version: 11
Anonymous UUID: 362A314A-2AFB-FB31-BAD5-3CF0E8476074
Sleep/Wake UUID: 50AFA7F0-9F28-468E-804C-5781223BC469
Time Awake Since Boot: 340000 seconds
Time Since Wake: 400 seconds
System Integrity Protection: enabled
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_CRASH (SIGABRT)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Exception Note: EXC_CORPSE_NOTIFY
Application Specific Information:
abort() called
*** error for object 0x7fd18977b458: incorrect checksum for freed object - object was probably modified after being freed.
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libsystem_kernel.dylib 0x00007fff94730002 __pthread_kill + 10
1 libsystem_pthread.dylib 0x00007fff993b95c5 pthread_kill + 90
2 libsystem_c.dylib 0x00007fff995686e7 abort + 129
3 libsystem_malloc.dylib 0x00007fff8a229e66 szone_error + 626
4 libsystem_malloc.dylib 0x00007fff8a21d827 tiny_malloc_from_free_list + 347
5 libsystem_malloc.dylib 0x00007fff8a21c715 szone_malloc_should_clear + 292
6 libsystem_malloc.dylib 0x00007fff8a21c5b1 malloc_zone_malloc + 71
7 libsystem_malloc.dylib 0x00007fff8a21b0dc malloc + 42
8 libc++abi.dylib 0x00007fff9b99a33e operator new(unsigned long) + 30
9 com.apple.CoreGraphics 0x00007fff9508b14c path_iterator_orientation_create + 109
10 com.apple.CoreGraphics 0x00007fff9547e889 CGGlyphBitmapCreateWithPathAndDilation + 953
11 com.apple.CoreGraphics 0x00007fff953cc91f CGFontCreateGlyphBitmapWithDilation + 723
12 com.apple.CoreGraphics 0x00007fff9508900e CGGlyphBuilderLockBitmaps + 922
13 libRIP.A.dylib 0x00007fff9b917ac6 render_glyphs + 263
14 libRIP.A.dylib 0x00007fff9b917961 draw_glyph_bitmaps + 1789
15 libRIP.A.dylib 0x00007fff9b9171eb ripc_DrawGlyphs + 1929
16 com.apple.CoreGraphics 0x00007fff950f132d draw_glyphs + 836
17 com.apple.CoreGraphics 0x00007fff95116ba0 CGContextShowGlyphsWithAdvances + 415
18 libqcocoa.dylib 0x0000000113b76aa7 0x113b11000 + 416423
19 libqcocoa.dylib 0x0000000113b76d9e 0x113b11000 + 417182
20 org.qt-project.QtGui 0x0000000110c1dc84 QImageTextureGlyphCache::fillTexture(QTextureGlyphCache::Coord const&, unsigned int, QFixed) + 84
21 org.qt-project.QtGui 0x0000000110c1da33 QTextureGlyphCache::fillInPendingGlyphs() + 659
22 org.qt-project.QtGui 0x0000000110bb82fd QRasterPaintEngine::drawCachedGlyphs(int, unsigned int const*, QFixedPoint const*, QFontEngine*) + 813
23 org.qt-project.QtGui 0x0000000110bb8f57 QRasterPaintEngine::drawTextItem(QPointF const&, QTextItem const&) + 615
24 org.qt-project.QtGui 0x0000000110bd35a0 0x110976000 + 2479520
25 org.qt-project.QtGui 0x0000000110a914e8 QTextLine::draw(QPainter*, QPointF const&, QTextLayout::FormatRange const*) const + 3528
26 org.qt-project.QtGui 0x0000000110bd27f5 0x110976000 + 2476021
27 org.qt-project.QtGui 0x0000000110bd165d QPainter::drawText(QRect const&, int, QString const&, QRect*) + 509
28 org.qt-project.QtWidgets 0x00000001103c6392 QStyle::drawItemText(QPainter*, QRect const&, int, QPalette const&, bool, QString const&, QPalette::ColorRole) const + 546
29 org.qt-project.QtWidgets 0x000000011033e9bc 0x11032a000 + 84412
30 org.qt-project.QtWidgets 0x00000001103d571e QCommonStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const + 4862
31 org.qt-project.QtWidgets 0x000000011033cd23 0x11032a000 + 77091
32 org.qt-project.QtWidgets 0x00000001105ce768 QHeaderView::paintSection(QPainter*, QRect const&, int) const + 2232
33 org.qt-project.QtWidgets 0x00000001105cba91 QHeaderView::paintEvent(QPaintEvent*) + 1169
34 org.qt-project.QtWidgets 0x000000011039a1bb QWidget::event(QEvent*) + 2123
35 org.qt-project.QtWidgets 0x000000011048d76d QFrame::event(QEvent*) + 45
36 org.qt-project.QtWidgets 0x00000001105129fa QAbstractScrollArea::viewportEvent(QEvent*) + 170
37 org.qt-project.QtWidgets 0x00000001105b51cd QAbstractItemView::viewportEvent(QEvent*) + 1453
38 org.qt-project.QtWidgets 0x00000001105cdb8a QHeaderView::viewportEvent(QEvent*) + 522
39 org.qt-project.QtWidgets 0x0000000110513515 0x11032a000 + 2004245
40 org.qt-project.QtCore 0x00000001110cccc9 QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) + 217
41 org.qt-project.QtWidgets 0x000000011035b4ab QApplicationPrivate::notify_helper(QObject*, QEvent*) + 235
42 org.qt-project.QtWidgets 0x000000011035e89e QApplication::notify(QObject*, QEvent*) + 8318
43 org.qt-project.QtCore 0x00000001110cc983 QCoreApplication::notifyInternal(QObject*, QEvent*) + 115
44 org.qt-project.QtWidgets 0x0000000110393970 QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) + 3152
45 org.qt-project.QtWidgets 0x0000000110367c9f 0x11032a000 + 253087
46 org.qt-project.QtWidgets 0x0000000110368043 0x11032a000 + 254019
47 org.qt-project.QtWidgets 0x000000011038a65c QWidgetPrivate::syncBackingStore() + 236
48 org.qt-project.QtWidgets 0x000000011039a484 QWidget::event(QEvent*) + 2836
49 org.qt-project.QtWidgets 0x00000001104a4741 QMainWindow::event(QEvent*) + 929
50 org.qt-project.QtWidgets 0x000000011035b4bb QApplicationPrivate::notify_helper(QObject*, QEvent*) + 251
51 org.qt-project.QtWidgets 0x000000011035e89e QApplication::notify(QObject*, QEvent*) + 8318
52 org.qt-project.QtCore 0x00000001110cd65b QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) + 971
53 libqcocoa.dylib 0x0000000113b3391e 0x113b11000 + 141598
54 libqcocoa.dylib 0x0000000113b341a1 0x113b11000 + 143777
55 com.apple.CoreFoundation 0x00007fff9715b5c1 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17
56 com.apple.CoreFoundation 0x00007fff9714d41c __CFRunLoopDoSources0 + 556
57 com.apple.CoreFoundation 0x00007fff9714c93f __CFRunLoopRun + 927
58 com.apple.CoreFoundation 0x00007fff9714c338 CFRunLoopRunSpecific + 296
59 com.apple.HIToolbox 0x00007fff9be12935 RunCurrentEventLoopInMode + 235
60 com.apple.HIToolbox 0x00007fff9be1276f ReceiveNextEventCommon + 432
61 com.apple.HIToolbox 0x00007fff9be125af _BlockUntilNextEventMatchingListInModeWithFilter + 71
62 com.apple.AppKit 0x00007fff8b0740ee _DPSNextEvent + 1067
63 com.apple.AppKit 0x00007fff8b440943 -[NSApplication _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 454
64 com.apple.AppKit 0x00007fff8b069fc8 -[NSApplication run] + 682
65 libqcocoa.dylib 0x0000000113b3308d 0x113b11000 + 139405
66 org.qt-project.QtCore 0x00000001110ca07d QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) + 381
67 org.qt-project.QtCore 0x00000001110ccf5a QCoreApplication::exec() + 346
68 com.bermarte.mandelbulber2 0x000000010efb3d4d main + 3117
69 com.bermarte.mandelbulber2 0x000000010eefe1e4 start + 52
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x00007fff94730ff6 kevent_qos + 10
1 libdispatch.dylib 0x00007fff8c078099 _dispatch_mgr_invoke + 216
2 libdispatch.dylib 0x00007fff8c077d01 _dispatch_mgr_thread + 52
Thread 2:: com.apple.NSEventThread
0 libsystem_kernel.dylib 0x00007fff9472a386 mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff947297c7 mach_msg + 55
2 com.apple.CoreFoundation 0x00007fff9714d624 __CFRunLoopServiceMachPort + 212
3 com.apple.CoreFoundation 0x00007fff9714caec __CFRunLoopRun + 1356
4 com.apple.CoreFoundation 0x00007fff9714c338 CFRunLoopRunSpecific + 296
5 com.apple.AppKit 0x00007fff8b133065 _NSEventThread + 149
6 libsystem_pthread.dylib 0x00007fff993b7c13 _pthread_body + 131
7 libsystem_pthread.dylib 0x00007fff993b7b90 _pthread_start + 168
8 libsystem_pthread.dylib 0x00007fff993b5375 thread_start + 13
Thread 3:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x00007fff94730176 __select + 10
1 com.apple.CoreFoundation 0x00007fff9719916a __CFSocketManager + 762
2 libsystem_pthread.dylib 0x00007fff993b7c13 _pthread_body + 131
3 libsystem_pthread.dylib 0x00007fff993b7b90 _pthread_start + 168
4 libsystem_pthread.dylib 0x00007fff993b5375 thread_start + 13
Thread 4:
0 libsystem_kernel.dylib 0x00007fff947306de __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff993b7729 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff993b5365 start_wqthread + 13
Thread 5:
0 libsystem_kernel.dylib 0x00007fff947306de __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff993b7729 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff993b5365 start_wqthread + 13
Thread 6:
0 libsystem_kernel.dylib 0x00007fff947306de __workq_kernreturn + 10
1 libsystem_pthread.dylib 0x00007fff993b7729 _pthread_wqthread + 1283
2 libsystem_pthread.dylib 0x00007fff993b5365 start_wqthread + 13
Thread 7:: Dispatch queue: NSCGSDisableUpdates
0 libsystem_kernel.dylib 0x00007fff9472a386 mach_msg_trap + 10
1 libsystem_kernel.dylib 0x00007fff947297c7 mach_msg + 55
2 com.apple.CoreGraphics 0x00007fff95092a64 _CGSReenableUpdateForConnection + 92
3 com.apple.CoreGraphics 0x00007fff9509273d CGSReenableUpdateToken + 532
4 libdispatch.dylib 0x00007fff8c07d871 _dispatch_call_block_and_release + 12
5 libdispatch.dylib 0x00007fff8c07233f _dispatch_client_callout + 8
6 libdispatch.dylib 0x00007fff8c076f6f _dispatch_queue_drain + 754
7 libdispatch.dylib 0x00007fff8c07d63b _dispatch_queue_invoke + 549
8 libdispatch.dylib 0x00007fff8c07233f _dispatch_client_callout + 8
9 libdispatch.dylib 0x00007fff8c0761cf _dispatch_root_queue_drain + 1890
10 libdispatch.dylib 0x00007fff8c075a34 _dispatch_worker_thread3 + 91
11 libsystem_pthread.dylib 0x00007fff993b768f _pthread_wqthread + 1129
12 libsystem_pthread.dylib 0x00007fff993b5365 start_wqthread + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000000000006 rcx: 0x00007fff50cfad28 rdx: 0x0000000000000000
rdi: 0x000000000000160b rsi: 0x0000000000000006 rbp: 0x00007fff50cfad50 rsp: 0x00007fff50cfad28
r8: 0x00000000fffffff0 r9: 0x0000000000000010 r10: 0x0000000008000000 r11: 0x0000000000000206
r12: 0x0000000000000001 r13: 0x000000011638e000 r14: 0x00007fff7a382000 r15: 0x0000000110098000
rip: 0x00007fff94730002 rfl: 0x0000000000000206 cr2: 0x00007fff7a3e8008
Logical CPU: 0
Error Code: 0x02000148
Trap Number: 133