CRM 7.0 error

SUGGESTED

Suddenly received error listed below. No changes made to ACCPAC, CRM or servers. CRM installed on separate server 2003R2. ACCPAC 6.0 on 2003 enterprise. Any idea how to fix error?

Error Opening the Sage Accpac Company TEST.

Name='Error'
Message=''
Number=-2147024770
Description=''
Operation='Creating ACCPAC.Session object'