Internal Server Error, notices is_home & is_archive

I had to disable this plug in.

I have been having this error occurring intermittently for months:
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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, [email protected] 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.
Apache/1.3.33 Server at mydomain.com Port 80
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In order to debug I put WordPreass in the debug mode and fixed all my warnings and notices except these 2:
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Notice: is_archive was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in —/wp-includes/functions.php on line 4136

Notice: is_home was called incorrectly. Conditional query tags do not work before the query is run. Before then, they always return false. Please see Debugging in WordPress for more information. (This message was added in version 3.1.0.) in —/wp-includes/functions.php on line 4136
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I was still having the server error. I did some work and found that the YOP Plug in was causing the is_archive and is_home notice.

I also found a $error “Maybe Here” that kept showing up on my logs in one of the files. I tried to comment it out but then it crashed the whole plug in, even after I undid my change.

Once I deactivated the plug in my server error went away.

I like this plug in but I can’t run it on my site.