Crystal Report

Question

I have developed an application in Asp.net the Reports are viewed through Crystal Reports. We were not able to print the reports, so we did an export of the report to a pdf. The problems we faced. 1. tested it 6 machine, of which we could view the pdf in 3 machine and could not view it in 3 machines, we were not able to find out the reason ? can anybody help out. 2. Further we wanted to install in a server which just has .net framework we are able to see the preview of the report but unable to export to pdf. We did install acrobat reader 6.0. But still it could not ope the pdf file Any help would be great we are fag end of the project Thanks Vinu