I uploaded and installed two fresh copies of  ips 4.0 Beta 2.  Both times I got the following error:  Any thoughts?

 

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Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

 

You'll have to check the error log to see whats wrong

Where is that one located?

ipb_root_forum/uploads/logs should be in there.

That's a server generated error and not an IPB generated error. You may have a problem in your .htaccess file, as that is usually the culprit for me when that type of error shows up. That means that the log is not going to be in the IPB logs directory, but rather the server logs directory.

You can rename your .htaccess file temporarily to see if the error persists so you'll know if thats the cause or not.

Another common cause is ownership or permissions being incorrect for the uploaded files.

-- Roger

Internal Server Error = 500 Error.

You need to check the Apache Error Log (not the PHP error log) for your IP Address, and find the entries that have that 500 error recorded.

That will tell you the actual underlying error which triggered the 500 Error.

 

And where is the Apache Error log located?

That depends on the server and its Operating System. You'd have to ask your host to do that on shared, or managed dedicated, hosting.