see moreRestore your backup file and start again. You did backup that file right?
What happened after you restored the fresh working file?
I'm not sure the OS matters as much as the browser. The forum issue is a perfect example of the way the two perform differently.
You say that you are not really well versed in php. I can respect that, but going forward, when making changes to your code, be very very careful as the slightest character out of place will cause the script will blow up.