ColdFusion Studio 4.5.2: Unable to Connect to Databases Via RDS
Problem: After installing the Studio 4.5.2 update, you are no longer able to connect to your databases through RDS. When trying to do so, you get a 'unspecified error' dialog box.
This article explains the root of the problem and gives you a workaround.
ColdFusion Studio 4.5.2: Unable to Connect to Databases Via RDS