try these steps https://docs.oxwall.org/faq:parse-error-troubleshooting

I did I have spent 6 hours trying everything and reading all I can.

I had an older version and it worked just fine it was not until I upgraded to 1.7.4 that all the troubles began. I even did 5 clean installs.

what is your sites url, have you tried running debug to see if there any errors, have you tried disabling any third party plug ins, have you made any code changes, it could be a plug in if things were ok before you updated your sites platform

http://moeetheory.com/moeox/index

its a clean install have not changed anything just installed and the forum wont let me add a
new forum or edit with out a parse error coming up when i hit submit, on the new forum or edited form.

yes have used debug on oxwall and firebug.

Just installed again clean from my host providers softaculous oxwall 1.7.4 still same error on create new forum or edit forum. parserror. then i close the window and refresh my fire fox and the forum I created shows up. I tried it with IE chrome same error no matter what browser I use.

Cleared all caches on server and browsers still nothing.

I have same thing happening on my site too.

Moee, do you mean the forum posts or the forum sections, like General and etc. ?

When i click on forum it brings me to the forum page then i hit customize this page,
The if i click add new forum or edit forum, a window pops up and i make the new forum or edit one, then click add, the little circle starts next to add, and a red bar at the top pops up says parserror. The add window just sits there doing nothing. I have to actually cancel the window by refreshing the browser. After refresh the forum shows up on the forum list.

If i try to add new forum or edit a forum i get parserror and the window dose nothing.
I cant even close it with the little X top right of the box.

Kevin, since we cannot reproduce that on our side, please PM me your admin details, I'll take a look at the issue. 

sent you a PM

I need your domain as well

If you find the problem let me know. I have noticed the same issue on my site.

Shaun will do ...

Kevin, we'll need your Cpanel access details, please PM

Shaun, can you please PM me your FTP and admin details in order to check and fix the issue, as Kevin can't do that?

Hi ross will pm you in the morning.  Not at home until then mate.

Pm sent. Hope it helps.

Shaun, you forgot your admin details for the website. I will need them.