Error when opening PDF files from SAP

Hi Gurus

I have posted the same question in ABAP Development and SAP Netweaver sections. Please see the issue below.

We are having a strange intermittent problem with Adobe Reader. When we try to open PDF files from SAP Frontend we get an error pop-up. The pop-up does not have any text. The title of the pop-up has "Adobe Reader". There is a blue question mark and an OK button.

This issue occurs few times a day

This issue does not occur in Windows XP.

Since past few weeks, we have been trying to find some error/warning/atleast some text in log files of SAP, OS, Adobe Reader, Registry entries, Event Viewer. So far, we have not found anything.

SAP is not able to help as this issue occurs intermittently and said when they tried, the issue did not occur. They made two attempts and in each attempt they tried 10 times to reproduce the issue. This issue occurs intermittently.

Environment

SAP R/3 4.7 EE SAP_Basis 620 Support Package 61

Windows Vista Enterprise

Adobe Reader 9.0 and Adobe Reader 9.1 (tried with both versions)

SAPGUI 710 Patch 12 (latest patch). It also occured in Patch 11.

Please suggest

Thank you

Pavan