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[speeddeacon]

I have been running Media Center for a while now but when i got back from a week long vacation, it suddenly won't open. i was running ver. 184 and have uninstalled then installed all the versions from then on but none will open.  i'm running OSX 10.8 and nothing has changed in my configuration.  i'll copy the first part of the crash report here.  Any ideas what i need o do to get back up


Process:         Media Center 18 [974]
Path:            /Applications/Media Center 18.app/Contents/MacOS/Media Center 18
Identifier:      com.jriver.MediaCenter18
Version:         18.0.215 (?)
Code Type:       X86-64 (Native)
Parent Process:  launchd [129]
User ID:         501

Date/Time:       2013-08-30 14:02:31.208 -0400
OS Version:      Mac OS X 10.8.4 (12E55)
Report Version:  10

Interval Since Last Report:          181452 sec
Crashes Since Last Report:           6
Per-App Crashes Since Last Report:   3
Anonymous UUID:                      01799A22-B37F-CE46-6394-96B683A51FB4

Crashed Thread:  0  Dispatch queue: com.apple.main-thread

Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: EXC_I386_GPFLT

Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0   com.jriver.MediaCenter18         0x000000010013f3c2 0x100000000 + 1307586
1   com.jriver.MediaCenter18         0x000000010013ed33 0x100000000 + 1305907
2   com.jriver.MediaCenter18         0x00000001002086ee 0x100000000 + 2131694
3   com.jriver.MediaCenter18         0x0000000100144618 0x100000000 + 1328664
4   com.jriver.MediaCenter18         0x00000001001413bf 0x100000000 + 1315775
5   com.jriver.MediaCenter18         0x0000000100140008 0x100000000 + 1310728
6   com.jriver.MediaCenter18         0x000000010013ff91 0x100000000 + 1310609
7   com.jriver.MediaCenter18         0x000000010021d474 0x100000000 + 2217076
8   com.jriver.MediaCenter18         0x00000001001a4fc7 0x100000000 + 1724359
9   com.jriver.MediaCenter18         0x00000001001a3e14 0x100000000 + 1719828
10  com.jriver.MediaCenter18         0x000000010084f8a4 0x100000000 + 8714404
11  com.jriver.MediaCenter18         0x000000010084e01f 0x100000000 + 8708127
12  com.jriver.MediaCenter18         0x0000000100844141 0x100000000 + 8667457
13  com.jriver.MediaCenter18         0x000000010039896a 0x100000000 + 3770730
14  com.jriver.MediaCenter18         0x0000000100001404 start + 52

Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0   libsystem_kernel.dylib           0x00007fff873eed16 kevent + 10
1   libdispatch.dylib                0x00007fff85938dea _dispatch_mgr_invoke + 883
2   libdispatch.dylib                0x00007fff859389ee _dispatch_mgr_thread + 54

Thread 2:
0   libsystem_kernel.dylib           0x00007fff873ee6d6 __workq_kernreturn + 10
1   libsystem_c.dylib                0x00007fff868f5f4c _pthread_workq_return + 25
2   libsystem_c.dylib                0x00007fff868f5d13 _pthread_wqthread + 412
3   libsystem_c.dylib                0x00007fff868e01d1 start_wqthread + 13

Thread 3:
0   libsystem_kernel.dylib           0x00007fff873ee6d6 __workq_kernreturn + 10
1   libsystem_c.dylib                0x00007fff868f5f4c _pthread_workq_return + 25
2   libsystem_c.dylib                0x00007fff868f5d13 _pthread_wqthread + 412
3   libsystem_c.dylib                0x00007fff868e01d1 start_wqthread + 13

Thread 4:
0   libsystem_kernel.dylib           0x00007fff873ee6d6 __workq_kernreturn + 10
1   libsystem_c.dylib                0x00007fff868f5f4c _pthread_workq_return + 25
2   libsystem_c.dylib                0x00007fff868f5d13 _pthread_wqthread + 412
3   libsystem_c.dylib                0x00007fff868e01d1 start_wqthread + 13

Thread 0 crashed with X86 Thread State (64-bit):
  rax: 0x0000000000000006  rbx: 0x0002000000000100  rcx: 0x0000000103481380  rdx: 0x0000000000001750
  rdi: 0x00000001037a3000  rsi: 0x0000000000001750  rbp: 0x00007fff5fbfe0a0  rsp: 0x00007fff5fbfdd30
   r8: 0x0000000000000000   r9: 0x0000000019175494  r10: 0x0000000000000000  r11: 0x00000000191754f5
  r12: 0x0000000000006c89  r13: 0x0000000000006c89  r14: 0x0000000106312050  r15: 0x000000010647bc89
  rip: 0x000000010013f3c2  rfl: 0x0000000000010206  cr2: 0x0000000103a36000
Logical CPU: 2

[speeddeacon]

Anyone?

[JohnT]

I wonder if there is a corruption in Media Center's library.  You could try renaming the library directory and then re-run Media Center. It will create a new empty library.

Your library should be here:
/Users/[username]/Library/Application Support/J River/Media Center 18/Library

If this works, you could send me your old library and I'll debug it here. (logs at jriver dot com)

[speeddeacon]

Thanks John, I'll give it a try.

[speeddeacon]

sorry to appear so inept, but where do I find the directory you mentioned above?

[JohnT]

Open Finder, click the "Go" menu item, hold down the Option key (marked Alt), you'll see the "Library" entry added to the dropdown list while holding the Option key.  Now click on the Library entry and you can navigate into "Application Support/J River/Media Center 18" and rename the "Library" folder to "Library1" or something.  Make sure Media Center isn't running when you do this.

[speeddeacon]

Thanks John, that worked.  Getting the Library to show up in finder was the key.  I'll email you my Library folder for debugging.  I appreciate it very much.

[JohnT]

I got your library files, but there appear to be one or more missing files.  Are you sure you sent everything from the library folder?  For example, there must be a "mediafiles.jmd" file for the library to be valid.

Also, do you have a recent library backup you could restore from?  In Media Center, go to:
File / Library / Restore backup...

Or in Finder, look in this folder:
Documents / J River / Media Center 18 / Library Backups

[speeddeacon]

Thanks John,

I sent all of the contents of the Library folder, but I'll look again when I get home.

I did a backup prior to the crashes but when I deleted the old library I tried to restore from the backup and it crashed again so maybe the old library was already corrupt and I didn't know it.

[speeddeacon]

John,

I sent you more files. I missed about half of them it seems.  Must have sent the email before they finished uploading.  Thanks again.

[JohnT]

This database is indeed corrupt, it won't open on my system either.  Unfortunately, there's nothing that can be done with it.  If you come across something reproducible that corrupts your database, please let us know.