Hello,
I am trying to cache all of our product pages (a few thousands), selecting all the product categories from the products tab. Afterwards when I hit Update Urls, the page loads for some time, and than I get an internal server error. If I select, only a few categories, than it seems to work. Is there some kind of limit on the number of products?

Dear Heshe,

No. There is no limit on the number of products. May be that "synchronizing" takes a lot of time.
Could you look in the web server's log and post here an error message which was generated by server? This could tell us what is wrong.

Dear jich,

For some reason I don't see any logs regarding this error in the php error_log, but in the apache log you could find the following line:
[06/May/2013:00:06:36 +0300] "GET /index.php/mturbo/adminhtml_mturbo/generateurllist/websitecode/base/key/95f6a60f1e5df8eb20446f585d82ed96/ HTTP/1.1" 500 - "www.he-she.co.il/index.php/mturbo/adminh...6ff80fb29522e/" "Mozilla/5.0 (Windows NT 6.1; rv:19.0) Gecko/20100101 Firefox/19.0"

Also, many pages that have been cached return 404 when previewing them. Finally even though I see the home page in the url list as cached, I don't see a timestamp when viewing source.

It is strange. Maybe permission to write to directory var/turbocache.

Could you send me your credentials to admin and FTP at Diese E-Mail-Adresse ist gegen Spambots geschützt! Du musst JavaScript aktivieren, damit Du sie sehen kannst. ? I would check in place.

I have sent you an email, did you recieve it?

Hello,

Yes. I will check tomorrow.