crystal report uninstall problem

Hi,
i created one setup folder for a project using package and deployment wizard and install the project in my system.In that project i am using one crystal report.it is working fine.

when i uninstall the project and try to create some report in crystal report,
crystal report software is not opening.and it showing crx32.exe error.
and the report which is in project is also deleted.

when i reinstall the crystal software, crystal reports are working.
how it is happening.is there any dll missing, when in uninstall process if it asks for keep this file or not ,i am giving keep this file.

please any suggestions???