Backing out EPC usage type

Question

First the question, and then some background to check if I've asked the right question!
How do I undeploy easily the EPC usage type I've added to my SAP on Linux TestDrive evaluation?
Some background: I've recently deployed EPBC11.SCA, EPBC211.SCA, EPPSERV11.SCA, EPWDC11.SCA, SAPEU11.SCA and UWLJWF11.SCA.
I can logon on to the portal with http://localhost:50100/irj/portal, but can't connect to the backend because context menus "New>System from Template" and "New>System from PAR" are missing from the system landscape configuration (only "New>Folder" exists). After checking the permissions and playing around with SLD, I've concluded that note 883948 holds the answer, and that substitution variables where missing before it was deployed.
Is this analysis likely to be correct? The substitution variables are they now, but don't do any good, and neither does activating the usage type.  There's an lots of .SCAs to unpick, so 'd though I'd ask here first.
Thanks
Phil

Answer 1

Hi Jörg
Thanks so much for replying - just last night I solved problem. After re-deploying at a higher SP and it still not working I was resigned to the possibilty it might never be fixed - I too couldn't see how EPC could be backed out.
Then I tried it in IE7 through my VM. The context menus are there, but don't appear in Firefox 2.0.0.8 in Linux :o
Words can't begin express the mixed emotions I'm feeling after sweating so much time over this. I only wanted to explore UWL for workflow scenarios, so EPC would be sufficient. For the normal EP I will use CE 7.1 preview, but that's for later.
Phil