Witchy Woman

New member. Have Windows XP Pro. Downloaded and installed the current free version of Switch. The program seemed to work fine a couple days ago. Now, on almost every file I try to convert, I get a Window that pops up and says: aacdec.exe has encountered a problem and needs to close. It wants to send a report to Miscrosoft. I've uninstalled and re-installed the program. Downloaded and installed aacdec.exe from the component add-on list and it still doesn't work. I'm confused as to why it's stopped working. Any help would be greatly appreciated. Thank you.