I know it's been some time since I responded to this, but I have been busy!!
Anyways, what I have done is remove the css menu writer content from the power cms template and simply add straight forward text links which has overcome the error of: Deprecated: Function split() is deprecated in /Users blah blah...
What is now happening is that I am getting a problem where the pages 'Contents_Results.php' and 'Contents_Insert.php' now won't display due to this error:
Safari can’t open the page.
Safari can’t open the page “Contents_Insert.php” because the server unexpectedly dropped the connection. This sometimes occurs when the server is busy. Wait for a few minutes, and then try again.
However, the server isn't too busy to show other pages such as the admin home page or even detail and update pages. I have tried many different times and at various times throughout the day and night through to the early hours of the morning. The pages work perfectly well on my localhost, so I really don't know how to get over this problem!
Have you got any advice? Do I need to proceed to the tech support ticket that you have instigated on this now?