This is the first I saw this error, I've developed my App more than one months, and it has become stable:
com.filepool.fplibrary.FPLibraryException: Error received from send(...)
at com.filepool.fplibrary.FPTag.BlobWritePartial(Unknown Source)
Is there any clue about this error?
I presume your network is possible cause (this is not only the cause).
If you have SDK log, it would be useful to identify the problem.