I had problems running Devel on my remote webspace, because it has very restricted functionality. Enabling devel to show me the db queries just got me a white page. Yesterday I installed Devel on my local apache:

xampp-win32-1.4.16 standard installation, but php runs in safe mode!

As soon as I toggle Devel db query on I get the following critical error:

First a critical Error window opens saying (free translation from german):
The code in 0x01877931 points to memory at 0x00000044. "Read" could not be executed on this memory.
(OK) (Cancel)

It's always the same addresses they don't change. Clicking OK and I get:

"An unhandled win32 exception occurred in Apache.exe [1088]. Just-In-Time debugging this exception failed with the following error: No installed debugger hast JIT dubbing enabled. In VS, JIT debugging can be enabled from....bla bla"

This is because I had Visual Studio installed, telling me I have the debugger disabled...

I guess this issue is some incompatibility with PHP settings, but I don't really know.

How to disable Devel now, I am relatively new to drupal and the db structure...
I already changed dev_query variable in the db from i:1; to i:0; but I still can't open my page...

Strangely, after the crash I CAN open phpMyAdmin, but I CAN'T run phpinfo(). Also the apache task is still running. It seems that only php isn't running stable anymore, but still running too.

I attached my php.ini, maybe it helps.

CommentFileSizeAuthor
php.ini_.txt40.49 KBschnizZzla

Comments

moshe weitzman’s picture

moshe weitzman commented
Status: Active » Closed (fixed)

i can't help debug your environment. sorry.

neisler.brian’s picture

neisler.brian commented

I have this exact same problem. Are there any answers for this yet?

m3avrck’s picture

m3avrck commented
Status: Closed (fixed) » Active

Confirmed, turning on devel with Win & XAMP crashes things.

Either the REAMDE should be updated to note this or a fix should be found.

No clue why this is happening...

kpander’s picture

kpander commented

On a related note, on a Drupal 5.2 site (hosted on Dreamhost) with PHP 5, as soon as I enable "Collect query info" the site only displays "Internal Server Error 500" and the error log contains "Premature end of script headers".

Displaying the memory usage shows the page is using only ~8mb (perfectly reasonable!). I'm not quite sure what devel.module is trying to do that causes this (assuming it is the cause) but that one setting triggers this.. My assumption is the process is taking up too much cpu time and getting killed by the web host but who knows.

Hope someone else has run into this and solved it!

Kendall
Abandoned Industry! :: http://invisiblethreads.com/galleries ::

m3avrck’s picture

m3avrck commented
Status: Active » Closed (duplicate)

Duplicate: http://drupal.org/node/126098