From the PUTM Setup Filters tab, I get the following errors:

Thread filter
Any thread ID entered won't appear in the list of new messages
< % ERROR: =GetListOfChildReference('NoThread','ThreadOf','NoMember=gnMember','Thread','ThreadOf',10,50,'ThreadTemp(,,,,.T.,,NoThread)','UpdateForm',,'ThreadHead(,,,.T.)') % >

Category filter
Any category entered here won't appear when reading new messages. This is useful when you do not want to read messages from specific categories.
< % ERROR: =GetListOfChildReference('NoCat','CateFilt','NoMember=gnMember','Category','Category',7,50,'CategoryTemp()','UpdateForm','1,7','CategoryHead()') % >

I have cleared both IE 6.0.26 temp files and proxy caches and the problem remains. Any solution?