Not enough storage is available to process this command

Hello all,

          I have an Infopath form which I use in Sharepoint. Form gets user name when loading and gets some information from another sharepoint list due to user name. Form was working but last 3 days I get that error on sharepoint when I try to open the form;

"Not enough storage is available to process this command."

         Also in Infopath, when I try to prevew the form I get this error ;

The query cannot be run for the following DataObject: excel
InfoPath cannot run the specified query.
The file is not a valid XML file.
Not enough storage is available to process this command.

        Thank you for your helps.

 Best Regards,

Alper ACAR