A family of Microsoft relational database management systems designed for ease of use.
Try to see if below article helps you understand and solve the problem:
http://msdn.microsoft.com/en-us/library/gg251410.aspx
And you may check this thread as well, as it might still apply in your situtation:
http://access.mvps.org/access/bugs/bugs0020.htm
Check for missing references, if so untick these.
If that not helps try to Decompile your database:
http://www.fmsinc.com/microsoftaccess/performance/decompile.asp
Hope this helps,
Daniel