Solidwork VB.NET Error

Hieee All,

I am facing following error message(refer image) while using vb.net API.

Description:-

I have developed a Solidwrok VB.net API application for 3D model / drawing automation, the application works fine,but since last 3-4 days i am facing above error message, this error message is not showing for any specific file i.e. for example i am having 40-50 components , above message is showing for any one of the file (its not consistent to a specific file) i am not able to get what's exactly problem because when run same application with same files on different machine its work fine ie. does not show above error message.

If anyone have how to fixed let me know.

Thank You.

SolidworksApi/macros