>General troubleshooting ideas:
>
>1) Can you make them work from VFP when issuing commands in the VFP command window?
The problem is only in the field at a few sites.
>
>2) When running your program, do the COM servers always fail on the same method call, when doing CREATEOBJECT or CREATEOBJECTEX, when checking a property, or what?
I do not know when it fails.
>
>3) Do they always fail, or just sometimes?
It does not happen every time, in fact it may only happen once a week.
Could it be related to the COM server being hit by more than 1 person at a time?
each client machine has it's own COM srever.
Are they running in MTS?
No
>
>4) Can you make them work when calling from VB?
Not tried.

The operation that is going on is a credit card operation.
- Swipe card with MSR (COM server)
- Send card information to credit card processing (COM server)