Sorting On UDF columns has corrupted my Changes view

Sorting On UDF columns has corrupted my Changes view

We added some user defined fileds to the changes screen and added them into the view list of changes. When we went to sort by this column the screen crashed. Now when I go into the changes screen inview list mode, it is blank. I've tried deleting my cookies and temp internet file to no avail. Susspect it must be a record in the database. Can anybody point me to how to get my view back. Many thanks

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