Bug #46330 sometime "nested transaction are not supported" message came out
Submitted: 22 Jul 2009 2:43 Modified: 29 Aug 2009 7:10
Reporter: victor godwin Email Updates:
Status: No Feedback Impact on me:
None 
Category:Connector / NET Severity:S3 (Non-critical)
Version:5.1.33 OS:Windows (SP3)
Assigned to: Assigned Account CPU Architecture:Any
Tags: .net, connector, nested transaction

File: Maximum allowed size is 50MB.
Description:
Privacy:

If the data you need to attach is more than 50MB, you should create a compressed archive of the data, split it to 50MB chunks, and upload each of them as a separate attachment.

To split a large file: