Though it's not to be unexpected from a beta status product, a number of users are reporting repeated error messages that state "Could not complete your request ...
Possible fix for "program error" messages We previously reported on repeated error messages that state "Could not complete your request because of a program error ...
Before getting started with different methods to fix this issue, check if you are using an original version of Adobe Photoshop. This is because pirated versions are more prone to viruses and bugs.