I have a visual basic.net program that prints two different labels to two Zebra printers. One of the labels prints fine. But the other label on and off throws an error.
Here is the error message:
An outgoing call cannot be made since the application is dispatching an input-synchronous call.
Here is where I get the error in VB program:
btApplicationRL = New BarTender.Application
Before this line I do a lot of database reads and writes. What should I do to fix the problem? And why am I getting this error? The other thing I dont understand is why I am getting the error sometimes and other times it works fine.