"start_call_sick" dump when starting newly installed 6.20

I have now got 6.20 Test Drive running ok, except for this:

When I first bring up R3 after powering up, I get a START_CALL_SICK short dump. The error analysis shows:

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Error analysis

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The error probably occurred when installing the

R/3 system.

Error message of the error that appeared first:

"no application server offers an ENQ service".

I can ignore the error and process ok from then on. Subsequent logons do not display this problem.

Do I have an installation error? Are others experiencing this same problem? Is there any action I can take to resolve this?

I have the short dump as a text file, and can send it to anyone who would like to see it...

Thanks.