Error in DMS download

Dear friends,

I am facing 2 errors as below in DMS and need your help.

1) In the T code CV02n or CV03n when user double clicks on checked files he gets a pop up window saying " The system is trying to execute the program/display the file C:\temp\_user name. Do you want to grant access to this file?", Now there is a drop down saying deny once, always allow etc....Even after user selecting Always allow the same pop comes again and again. Why is this happening? and how to avoid the same? Please help.

2) Some times for few files when he double clicks on them he gets one pop up window with error stating "The program doesnt have a program associated with it for performing this action. Create an association in the folder options control panel.

Here we are using KPRO, the above errors are coming for the basic files like PDF, word, text, excels which are already available in the system to read.

I feel some wrong in work station application.

Please help me on the same.

Regards,

sai