We have the same error occurring (0xC0000005 at EIP = 0x30345365) and have no idea what is causing it. We get a crash every couple months.
Are you using any USB to serial adapters from FTDI in your setup?
We also have producer consumer loops and also log data to a text file.
The same code has worked with 7.1 and XP on many computers for years without a single memory access violation error.
Have you learned anything new about this error?
