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What are the errors?
Does Windows show that you can uninstall the viewer?
Can you try a System Restore to prior to the first installation of the software?
Regards, Charles Shade
CSHADEDESIGN | AUTOCAD LT | LT-KB | DYNAMIC BLOCKS
Please mark Accept as Solution if your question is answered. Kudos gladly accepted. ⇘
ADR forum support is at:
http://forums.autodesk.com/t5/Autodesk-Design-Review/bd-p/140
Seems to be a common issue, read the posts there too.