File open command is disable in pvelite software.
provide solution.

Dear Sir,

Chances are that you have an older version of Windows such as NT4 or prior. There was a menu corruption problem with the older Windows version in the initial PVElite 2004 release. This problem was addressed and resolved in the January 2004 build. In March we placed a new build on the web site that added some new features and resolved other issues since the January build.

Please download and install the latest build to fix this problem.