Wonderizing an existing app

Dear List,

I have successfully Wonderized one application and am now trying my second, following instructions http://wiki.wocommunity.org/display/documentation/Integrate+Wonder+Into+an+Existing+Application

Biggest issue, my browser shows "An Internal Server Error Has Occurred." which I suspect relates to the last shown log line:

Mar 06 17:27:45 MPMall[9999] WARN  NSLog  - <WOWorkerThread id=15 socket=Socket[addr=/192.168.0.122,port=57316,localport=9999]> Exception occurred while responding to client: java.lang.IllegalMonitorStateException

In Application.dispatchRequest(), the response (as returned from super.dispatchRequest()) seems to have been built fine. If I log out the response contentString() and view that page, it is exactly as expected so the guts of the work of generating the page seems ok.

I do have a few other errors to overcome, including an intermittent one where the EOModelGroup is empty (never happens if I run in debug mode, some kind of thread timing issue?).
Also the following which looks a bit ominous as it has an ERROR status.

Mar 06 17:58:06 MPMall[9999] ERROR er.extensions.eof.ERXEC  - Should pop, but ec not found in Vector! WorkerThread15, ec: er.extensions.eof.ERXEC@1ee29820, ecs:[]

Thanks for any pointers.
John
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