We have an interface which connect with Sage 50. The interface is written in VB.NET. It worked fine before sage 50 upgrade to 2016. The random crash would happen when exporting invoice to Sage 50 2016. There is no error message left. I tried add try..catch in code. But it didn't work. This is a really headache issue. Could anyone give me a hand to figure out the problem. We use the latest Sage 50 2016 SDK, it is Canadian edition.