[Bug 5512] New: Error: invalid in-use arena magic

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5512

Summary: Error: invalid in-use arena magic
           Product: Wine
           Version: unspecified
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P1
         Component: wine-binary
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

I got a custom coded Win32 Program (98/2000/XP compatible) that uses MDAC.
Evrything is installed - other applications work great.

This application exits with a "memory error: 44" window, the last winedebug-log
line is:

warn:heap:HEAP_ValidateInUseArena Heap 0x7fcf0000: invalid in-use arena magic
for 0x7fd45d08

Any suggestions?

I included the complete log.

Thank You