Dynamics GP 2013, 2015-Integration Manager 12 - The input string was not in a correct format.

You can try this http://support.microsoft.com/kb/2012471
But it didn't help me.

• The Registration keys on your Integration Manager and GP do not match.
• Ensure that you are using the exact same Name in your Integration Manager Key, as your GP Site Key
• You may be running GP and Integration manager with different levels of permissions
• Right click on Dynamics GP and Run as Administrator
• Right click on Integration Manager and Run as Administrator
• Most likely, your data is bad.
• Remove all spaces that do not belong in your data

• Convert everything to text to ensure that when it is exported to your text file, 1 converts to "1" and not 1.00
• This tends to happen with the document type field, make sure there's no decimals
• Use Tab delimited to prevent "," in data from being misinterpreted