have you played around with memory allocation? Try setting sys(3053,1) down to like 8 megs and see if that makes a difference.

>I had a similar error that refered to memory at 0x00000000. It appeared whenever I was low on resources (like when I have Excel running in the background).
>
>I figured it had something to do with virtual memory and that my swap file may have had some corruption. Try turning off virtual memory and make sure that the swap file is deleted, then turn it back on.
>
>I figured that it couldn't hurt and I haven't seen the problem since. (I had also freed-up some space to allow for a larger swap file, so that may help as well.)
>
>I hope this helps.
>
>>I am getting the following error today. It started just before noon.
>
>>VFP6.EXE - Application Error
>>The instruction at ox77f1d493 referenced at "0x00000000". The memory could not be "written". Click on OK to terminate the application. Click on Cancel to debug the application.
>
>>The error happens when I try to open a few forms in one project. Pressing OK or CANCEL cause VFP to shut down.
>
>>Things I have tried to solve the problem.
>>1) I have uninstalled and reinstalled VFP6 (with SP3).
>>2) Got the entire project with files off of backup tape, but they have the same problem.
>>3) Recompiled the class library that the forms are based on. Note not all forms in the project exhibit this error. Forms based on the same class library, but in other probjects do not exhibit this error.
>>4) Deleted PJT and PJX files and rebuilt project. No dice.
>
>>Any ideas? I will lose almost an entire app if I can't solve this.