Why do I get this error from my subdataset? java.lang.Integer incompatible with java.math.BigDecimal

[rpozsgai]

I have a Jasper report that runs fine at many of my customers.  However, with my latest new customer, I get this error.  If I remove the subdataset, then the error goes away.  But, the subdataset simply returns two comment fields, so I'm very confused as to how that is generating the error.  Again, this is working at my other customers. 

I was able to determine that the dataset is the problem because I eliminated fields band by band until I had a completely empty form with nothing but the dataset and subdataset.

The jrxml is attached.  Can someone point me in the right direction as to how to resolve this issue?