I am having the same problem. My editor used inCopy and I have upgraded to inDesign CS.
For the past few days I have been able to send her assignments and she has edited them and sent them back-- and I am able to open them and update the content in my inDesign files.
But yesterday the returned assignments all started crashing inDesign.
It would be great to find out what the problem is.
I got another crash. This time just on trying to launch inDesign.
Below is the report. If anyone can help it would be very appreciated.
Process: Adobe InDesign CS6  Path: /Applications/Adobe InDesign CS6/Adobe InDesign CS6.app/Contents/MacOS/Adobe InDesign CS6 Identifier: com.adobe.InDesign Version: 126.96.36.1996 (8010) Code Type: X86 (Native)
Parent Process: launchd 
User ID: 505 Date/Time: 2013-02-14 13:25:08.237 -0500 OS Version: Mac OS X 10.8.2 (12C60)
Report Version: 10
Interval Since Last Report: 3983 sec Crashes Since Last Report: 2
Per-App Interval Since Last Report: 2270 sec
Per-App Crashes Since Last Report: 2
Anonymous UUID: B8865CAA-B81B-3211-BACA-1F5C06EF8F47
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_INSTRUCTION (SIGILL)
Exception Codes: 0x0000000000000001, 0x0000000000000000
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 PublicLib.dylib 0x016c5372 ProtectiveShutdown::~ProtectiveShutdown() + 278 1 PublicLib.dylib 0x016c53f5 ProtectiveShutdown::~ProtectiveShutdown() + 17 2 ObjectModelLib.dylib 0x016082d2 ShuksanInit(IStartupScreen* (*)(), IPlugIn*) + 28162 3 ObjectModelLib.dylib 0x0160691c ShuksanInit(IStartupScreen* (*)(), IPlugIn*) + 21580 4 ObjectModelLib.dylib 0x015f70c3 0x15d6000 + 135363 5 ObjectModelLib.dylib 0x015f5742 0x15d6000 + 128834 6 ObjectModelLib.dylib 0x0160566f ShuksanInit(IStartupScreen* (*)(), IPlugIn*) + 16799 7 ObjectModelLib.dylib 0x016024ba ShuksanInit(IStartupScreen* (*)(), IPlugIn*) + 4074 8 com.adobe.InDesign 0x00001dc2 main + 82 9 com.adobe.InDesign 0x00001d55 start + 53
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x942f49ae kevent + 10 1 libdispatch.dylib 0x9a59ec71 _dispatch_mgr_invoke + 993 2 libdispatch.dylib 0x9a59e7a9 _dispatch_mgr_thread + 53
0 libsystem_kernel.dylib 0x942f38e2 __psynch_cvwait + 10 1 libsystem_c.dylib 0x9374c289 _pthread_cond_wait + 938 2 libsystem_c.dylib 0x9374c512 pthread_cond_timedwait_relative_np + 47 3 com.apple.CoreServices.CarbonCore 0x99e496ad TSWaitOnConditionTimedRelative + 177 4 com.apple.CoreServices.CarbonCore 0x99d95b9b MPWaitOnQueue + 261 5 PMRuntime.dylib 0x005b9581 SetVSizeBaseline(unsigned long) + 1473 6 com.apple.CoreServices.CarbonCore 0x99e1ca7b PrivateMPEntryPoint + 68 7 libsystem_c.dylib 0x93747557 _pthread_start + 344 8 libsystem_c.dylib 0x93731cee thread_start + 34
I'm having the same problem too. Editors making changes in InCopy CS6 and saving fine. They can reopen the file and all their changes are still there. When I open the file in InDesign CS6 and allow it to update the assignments, it crashes. If I don't let it update, but then manually re-place the text from the ICML files, it works, so neither file seems to be corrupt. These are all new installations on new iMacs.
Any help much appreciated!
I am having a similar issue. From InDesign CS6, when I try to update assignments, InDesign crashes. I am able to check in/out the InCopy file fine, just the update the content function does not seem to work. I do not receive any other error message except the Adobe InDesign CS6 has stopped working.
I don't want to have to Unlink the Connection, recreate a new InCopy file and relink to InDesign. Is there a solution to update content in Design?
Any help is appreciated.