There have been some indications out there in IF-land about a problem with restore in Alan alpha9 interpreters. One of the games that have been hit is "Room 206" by Byron Campbell, a game reviewed here recently.

The problem have now been fixed. Alpha9 interpreters for Windows have been patched, and the fix will be included in the upcoming beta1. (As well as all development snapshots from now on.) If you are uncertain if your interpreter have the problem, interpreters with a date of 2010-12-06 and later should be ok.