Further info:
I discovered "Content - Ari Flip Book" plugin not enabled so enabled it. Now, in any category where I put the moduleid parameter into the top of an article, instead of seeing a list of articles, I get a crash and these are the details:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator,
webmaster@readournovels.com 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.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache mod_fcgid/2.3.6 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at
www.readournovels.com Port 80
In other words it appears Ari Flip Book causes my site to crash. This isnt the first add on I have bought to do this. Jpub caused crashes, too and it was because article content is handled differently in 1.72 onwards so that guy said.
Is there any way you can fix Ari Flip book? I bought it and now cant use it!