Hello,
Thank you for reaching out.
To let us better understand the situation, please clarify
1. Please give detailed steps about what you are trying to achieve
2. Name of the application
3. From where are you trying to open it?
4. Please collect an additional technical report (click on the Parallels icon > Help > Send technical data > check "Attach screenshots..." > press Send Report) and send the report's 9-digit ID in a reply to this e-mail.
Thanks