I'm getting the same message after I edited a report that uses an RTF template. I'm also now unable to run all other reports that use RTF templates, under my domain sign-in, on my machine. I've tried rebooting my machine to no avail. I'm going to try a re-install as recommended here. I have a suspicion that this error is caused by clicking the regular 'Save' button when editing an RTF template in MS Word rather than clicking the 'Save and close' button in the 'Add Ins' tab (I think) but I'll let Capita do the testing to confirm that one! If they ever get round to it that is; this problem has been there in SIMS for years now. I remember experiencing it in 2009. I ended up stopping using any reports that used RTF templates because of the hassle. Years later, for reasons too complex to go into here, I found myself having to use them again and now really wish I hadn't!