IDM4.1 upgrade VRDIM error when starting drivers

Hi,

I have been testing the IDM4 upgrade process in our lab, and have encountered problems.

We have an existing tree running IDM 3.6.1 on eDir 8.8.6.3

Our migration approach is:

- build a new server (SLES11)
- Install eDir 8.8.6
- Join this server to our tree
- sync the existing partitions to the new server
- sync our Driverset to the new server
- Install IDM4.1 & iManager on the new server
- Start the drivers on the new server
- Remove the old servers from the driverset & decomission

However, I am getting errors when it comes to trying to start the drivers on the new server:
novell.jclient.JCException: request -783 ERR_VRDIM_NOT_INITIALIZED

I have followed the advice givein in TID 7002449, but the fix for our specific error in NDSTRACE is to install the eDir 8.8.5 FTF4 patch. As we are running eDir 8.8.6 this is not possible, so not sure how to fix...

Has anyone else experienced this error?
Thanks