Error 500 after 5.4.2.1 upgrade

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After upgrade to 5.4.2.1 I get an Error 500 every time I try to use the advanced features in tinymce (add table, edit image properties, etc.)

the exact error message

500 Server Error
A misconfiguration on the server caused a hiccup. Check the server logs, fix the problem, then try again.
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URL: http://www.pacesinfo.org/paideia/updates/concrete5.4.2.1/concrete/js/tiny_mce/plugins/table/table.htm?v=1cf1be481dfeb710b1ed0f243a55ecad


When I look at the server log I see this..

[Sat Oct 15 16:44:19 2011] [error] [client 66.249.72.34] Premature end of script headers: ms-settings.php
[Sat Oct 15 16:44:19 2011] [error] [client 66.249.72.34] Request exceeded the limit of 10 internal redirects due to probable configuration error. Use 'LimitInternalRecursion' to increase the limit if necessary. Use 'LogLevel debug' to get a backtrace.


Can anyone help? I'm not even sure where to start...

 
msglueck replied on at Permalink Reply
msglueck
why not. It tells you clearly what to look after:

premature script end in file ms-settings.php

it seems there is a syntax error in that file.
Additionally it seems like you have redirect loop (redirects redirects to the redirect which causes an endless recursion... until the server notices, stops and produced the log entry with the error).

CU
Markus