Blank page instead of login

[streifl]

Hi there,

I tried to install a module (iCal Ptach) when the page went blank. Ever since then when trying to access the local installtion of sugar, I only get a blank page instead of the login screen.

We're running Sugar 4.5.1h on a Windows 2003 server.
I can still log into phpmyadmin and everything seems ok there, but I am not expert.

I have had this before when we were still running sugar on a mac server and restarts always helped. Not this time unfortunately.

Any ideas?

Update:
I turned on error checking and this is now what I get:
Warning: require_once(modules/ACL/ACLController.php) [function.require-once]: failed to open stream: No such file or directory in C:\Programme\sugarcrm-4.5.1\htdocs\sugarcrm\include\entryPoint.php on line 103

Fatal error: require_once() [function.require]: Failed opening required 'modules/ACL/ACLController.php' (include_path='.;C:\php5\pear') in C:\Programme\sugarcrm-4.5.1\htdocs\sugarcrm\include\entryPoint.php on line 103

Now what?

-c.

[streifl]

OK I figured it out myself. What happened is this:

I had recently migrated my sugar installation from my mac server to a windows 2003 server.
After the migration the iCal Patch did not function anymore and I tried to re-install it.
Somehow while re-installing sugar crashed and I got the before mentioned errors.
Hard to believe but what happened is that the whole "modules" folder was gone. It just vanished from the earth.
I copied the folder from a recent backup and got sugar to work again with the exeception of the calender module which was complaining about some problem with datetime.php
And that's what solved the mystery finally (well not the vanishing part but the rest).
The Win 2003 installtion must use php 5 or something which makes use of the function datetime. So sugar got this new function datetimeutil.php.
Now I am not sure how but the iCal patch somehow went back to using datetime.php which prompted all sorts of errors.
Luckily enough I still had the php.old files. i renamed them and now all modules seem back to normal.
Except for the iCal patch, of course, which I am not trying to re-install at this point although I am in bad need of it.

-c.