Quest window needs to be updated problem

[Stugein]

I just installed Simple UI. Everything looks to be working fine, except the quest journal. When I try to open the quest journal I get a box that says:

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You are using a UI Mod that is not compatible wuth recent changes to the Quest window.

Please upgrade your UI mod to a compatible version or revert to the default UI.

{OK}
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In an attempt to rememdy this I closed out EQ2 and added in the Milquetowst Quest Journal, which states it was just updated a few days ago. Restarted EQ2, but still get the same message when trying to open the quest journal.

I'm sure I'm doing something stupid, but has anyone else run into this and know what the cause is?

Thanks for any info.