Problem with installing Gallery2

[lamnk]

At the very beginning of the installation i got this following message:
Warning: session_start() [function.session-start]: open(/var/lib/php/session/sess_k7s27sjs03qlncd01afrnjihj3, O_RDWR) failed: Permission denied (13) in /var/www/vhosts/xxx.com/httpdocs/anh/lib/support/GallerySetupUtilities.class on line 348

Warning: session_start() [function.session-start]: open(/var/lib/php/session/sess_68de0f7e758d46746fff15589e81d6d7, O_RDWR) failed: Permission denied (13) in /var/www/vhosts/xxx.com/httpdocs/anh/lib/support/GallerySetupUtilities.class on line 75
When i turn LSWS off and switch to apache there's no error at all

So where is the problem here ? (I got a wordpress blog on the same domain and it runs ok )

[mistwang]

With LiteSpeed, you run php with suexec, while with Apache, php run as "nobody", so you have permission problem when access session files. You should remove those session files having problem with.

[lamnk]

Hmm, i tried to remove the session files in /var/lib/php/session/ but the error still occurs

[mistwang]

close all your browser windows and reopen.

[lamnk]

Still no luck though ...

Guess i need to install the script with apache and then switch to LSWS and see if it works

[lamnk]

Installation went fine with apache and the script runs smoothly, i can add, edit photos ... but switching to LSWS give me a total blank page :(

[mistwang]

It is a file permission problem.

Maybe you can turn off php suexec by changing
http://www.litespeedtech.com/docs/webserver/config/vhostlist/#setUidMode

to "Server UID".

[lamnk]

Doesn't change anything, i even turned Restrained off then restarted LS

[lamnk]

Update: I installed LSWS on another dedicated box (last time it was on a vps). Gallery runs normally with the default shipped php package. When i compile & install php like your guide in wiki, i get the same message in the first post.