After upgrading to version 1.2.0 rc4 from 1.1D my coppermine refused to work anymore :( . 
I searched the forum for a solution, tried the ob_end_flush() thing without any change. Also tried the safe mode thingy also without change. Heck I even tried the suggestion of using the function.inc.php/init.inc.php from rc3 also without any change. And al possible combinations of these.
I noticed when checking the schema.txt that I missed some columns in my cpg_config table (although I ran the install.php script without any errors?!). I also added these missing columns and also checked the other tables for missing things, they didn't.
Now I'm out of suggestion so if you have any please help.... 
The weird thing is that this 
http://www.rblemmer.nl/modules.php?name=coppermine isn't working. But this http://www.rblemmer.nl/modules.php?name=coppermine&file=displayimage&album=random&cat=&pos=-669 is. Also the admin/config screens are working. It seems that only the index/album view isn't working?!
Below some debug info if you want to know...
[debug]
Debug info Integretion vars 
Selected Nuke Theme: rblemmer
Nuke Version: 6.9 
Module path modules/coppermine 
Nukelink modules.php?name=coppermine 
Coppermine Theme: default 
$_SERVER vars 
DOCUMENT_ROOT: /home/rblemmer/www 
HTTP_ACCEPT_LANGUAGE: nl,de;q=0.5 
HTTP_USER_AGENT: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; DigExt) 
SCRIPT_FILENAME: /home/rblemmer/www/modules.php 
PHP_SELF: /modules.php 
CPG Config 
TABLE_PICTURES cpg_pictures 
TABLE_ALBUMS cpg_albums 
TABLE_COMMENTS cpg_comments 
TABLE_CATEGORIES cpg_categories 
TABLE_CONFIG cpg_config 
TABLE_USERGROUPS cpg_usergroups 
TABLE_VOTES cpg_votes 
TABLE_USERS nuke_users 
allow_private_albums 0 
Site url (ecards_more_pic_target) http://www.rblemmer.nl 
fullpath modules/coppermine/albums/ 
ALBUM_SET  
FORBIDDEN_SET  
Queries 
GET Array
(
    [name] => coppermine
    [file] => config
)
 
POST Array
(
)
 
Page generated in 0.031 seconds - 1 queries in 0.001 seconds - Album set :  
 
 
Advanced debug mode PHP version: 4.2.2
mySQL version: 3.23.58
--------------------------------------------------------------------------------
Image Lib(s)
gd 
  
module doesn't exist 
Server restrictions (safe mode)? 
Directive Local Value Master Value 
   
disable_functions no value no value 
file_uploads 1 1 
include_path .:/usr/share/pear .:/usr/share/pear 
open_basedir /home/rblemmer/  
email 
Directive Local Value Master Value 
   
Size and Time 
Directive Local Value Master Value 
max_execution_time 30 30 
[/debug]
			
			
			
				Upgrade to 1.2.1 and ask you ISp to include to the albums dir in your open_basedir
			
			
			
				Just upgrading was enough... Now playing around with the settings and trying to fix my theme...
Thnx...