Internal Error flash & slow saving/posting

[laputa]

SMF Version: SMF 1.1 RC2
I've spend all night trying to read and search for any FAQ in regards these problems, but i can't find anything. I've tried the .htaccess (mod_security) but doesn't seem to solve the problem in regards to the "Internal Error" problem. These are the problems i've been experiencing:

1) After i log in at home on my PC (Window XP using Firefox), between redirection to the proper forum page, the "Internal Error" page flashes for a split second. It flashes too fast i can't even copy and paste to requote on here. But it does redirect me after logging in to the forum. However, when i'm at work on a MAC (OS X, Netscape), the "Interal Error" page remains and does not redirect at all. A few times it just go blank.

2) When i'm making modification in "admin". Everytime i press "save" it never reloads and always display "loading" on my browser status. But the modification has been made. Same problem when i'm making a post. It'll keep "loading" and eventually, it will says "A posted a post before you, would you like to modify" but the new post was the post that i've made. I don't know what the problem is, help... please?

[jerm]

i haven't heard of this issue before.
Do you have any mods installed?
Is there anything in the error log?

[laputa]

actually i don't think i even have mod installed on my host. I mean, it works and redirects at home on a PC but not on a MAC. Could it be browser problems? I haven't this problem neither with other msgboards that runs with SMF neither.

there's no error log on the host server if that's what you mean.
where do i find the smf error log?

[jerm]

Admin > Forum Error Log
it's right at the bottom of the page on the left hand side

[laputa]

Oops. Thanks. i just found the SMF Log session, no it doesn't have the error log of posting nor the "Internal Error".

I have found this:

User: Guest       Fri 26 May, 2006, 04:05:25 PM
IP address: 70.31.169.209      
Session: f84b032d64de154bab0c0293b1b3f196
URL: hxxp:laputa.freehostia.com/castle/index.php [nonactive]
Error: Unable to load Themes/default/index.template.php!

I should be at work on a MAC logging on with Netscape during that time. But also my web host's server has been up and down earlier this afternoon so i don't know if that's anything to do with the above particular error log.

[laputa]

Okay, i just tried with Explorer on a PC. now the error msg stays, it doesn't redirect when i log in.

hxxp:laputa.freehostia.com/castle/index.php?PHPSESSID=10ac3e712c4c920b9d0c9549eaff4117&action=login2 [nonactive]

The page cannot be displayed
There is a problem with the page you are trying to reach and it cannot be displayed.

--------------------------------------------------------------------------------

Please try the following:

Open the hxxp:laputa.freehostia.com [nonactive] home page, and then look for links to the information you want.
Click the  Refresh button, or try again later.

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HTTP 500 - Internal server error
Internet Explorer 

i have to press refresh to log into the forum properly after that display.

posting is fine, it redirects me right away.

Same error msg as quote above when i log out. Session link:

hxxp:laputa.freehostia.com/castle/index.php?action=logout;sesc=f62e2e5e366e11b464348a73c3dcfdae [nonactive]