I have created a database in access 2010 and I have users that are running 2007. If i give them a copy of the entire database it runs fine, but it will not recognize the format once the database has been split. i have read some information regarding features that are not supported, but i'm not sure its the issue since it seems to run fine as a whole database- is this to be expected? Please bare with me- fairly new to the program and self taught.