Error in Lotus Notes 8.5.3 <solved>

The unwanted behavior:

There is an bug in Lotus Notes 8.5.3 with Symphony 3 inbeded. If you install Notes 8.5.3 and you try to start an application Lotus Notes Application using Symphony classes you get the error message

Error loading USE or USELSX module: "*symphonycfglsx"

This error results from a USELSX statement in symphonylsx.lss file, which has to be included for using Symphony classes  in Lotus Script. We are trying to solve this issue. If we find a solution we will post the solution here.

is solved at our site. We did an uninstall of designer client and reinstalled the software. Aftwards all functionalities returned immediately.