I had been happily referring to the dentry example in the Gallery for a period of weeks. All the samples worked great and as near as I could tell I never "modified" the files. Today when I tried to browse the examples I got the 800A0bb9 error with some words about Arguments are of the wrong type.... I tried moving the local and master versions of the Gallery to the recycle bin and reinstalling with the wizard.... same result. The only thing I can think of as different is that I installed SP3 for Win2K. Anyone else seen this problem?... In the meantime I will stumble off to see if I can get some help with my optiongroup DTC which is acting wonky.