[Zen Cart] HTTP 500 Error

[willstyle]

Hi All

currently getting problems (500 errors) on my website http://www.cityaquaticscardiff.co.uk. its gets so bad that htaccess corrupts and i end up replacing it with a backup version from a few months ago as a temp fix

MSU is the only module that i can see has any part in the htaccess file and disabling it "seems" to make the errors disappear but i really like it and dont want to remove it . its been running since i installed it (2 years near enough) but only has started becoming a problem in the last 2 months?!

im currently getting these errors
/home/cityaqu1/public_html/store/.htaccess: RewriteCond: bad argument line '%{QUERY_ST'

any help would be most welcome

thanks

[inveo]

We have checked your site and everything seems to be working fine.

HTTP 500 error has usually two reasons: corrupted .htaccess file content or unstable PHP core. First one can be solved by generating new .htaccess file, the second one by installing pure un-patched PHP from php.net.

[willstyle]

thanks

can you resend or pm the install instructions, been a while since i installed it and but need to be pointed on how to rebuild it

[inveo]

You can download complete installation package by logging to customer area at inveostore.com and clicking the product name.