This is my first post. Runnng Vista 32 bit along with the free version of Avast!. When attempting to open a pdf file - I get the error message "that the application failed to start because its side by side conifiguration is incorrect. See application event log for more detail". Well even if I could find that application log, I do not know what I would be looking for. I did attempt to repair the Adobe reader and finally uninstalled it. Any thoughts? I will add that I ran across an Avast Forum comment on a similiar issue that said to reinstall C++ 2008 for the 32 bit due to the fact that sometimes the Avast!5 installer does not always correctly install the C++ correctly. Sounds good, but I hate to take a chance that could make things worse.