ActiveX/OLE Connection Error

http://forums.aspfree.com/t28720/s....activeX+control

I get the same exact error as this person except it happens on a checkbox control inside a subform. I set a breakpoint and it doesn`t even execute the code before producing the error. The same exact code works if the controls in a regular form... any ideas on how to fix this??!

hi all ,
I've designed access program and it's working without errors
on my machine . Once I installed it on another PC , access
gives me error message :
The expression On Got Focus you entered as the event property setting
produced the following error : A problem occurred while microsoft access
was will be apcommunicating with the OLE server or ActiveX Control.
Then i tried to install it on another PC , so it worked again without any errors !!
So how can i find what was the problem with the first PC , cuase it is still not working on that one .
Any information about this problem preciated.