Good Day Goraksh,
A couple of questions are needed to determine what the cause of your issue could be: What client is the Export issue occurring? Report Builder or Web Generator?
In the Web Generator - the export report results into Excel, PDF, Print View in ON2008 should be functional in Internet Explorer version 6 or greater running on XP and Vista.
It may help to send screenshots of the error and copies of log files to OakTree Support (support@oaktreesolutions.com) Log files for the Web Generator are typically found in the C:\Program Files\OakTree Solutions\ON2008\www\dat directory on the Web Server. Report Builder log files are typically found in the C:\Program Files\OakTree Solutions\ON2008\Log directory on client machines.
The support team will be able to decipher what could be happening.
Thank you,
Brian
Brian Holesapple
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OakTree Enterprise Solutions Inc.
www.oaktreenavigator.com
www.oaktreesolutions.com