BoriTz,
Need a bit more detail here to help you. Did you follow all of the steps in the readme.txt file?
This port is tested under Nuke Platinum 7.6.b.4
Installation steps
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1) Copy the phpraid dir, to your Nuke/modules/ Dir.
2) Login to Nuke as Admin. and activate the (phpraid) module.
3) load the phpraid module through nuke. or go to
http://yoursite/modules.php?name=phpraid
4) Follow the installation process.
WHEN COMPLETE
5) rename or Delete the install Directory.
6) login to Nuke with the user you configured in the install process.
7) go to your phpraid module as in step 3
PHPRAID PRIMARY CONFIGURATIONS
go to Configure - Change the info to your needs ( uncheck the "Disable phpRaid")
9) Go to Permissions - Create the permission levels you need. <-- you can set the Default permission to be assigned to users in the configure section.
10) Go to Guilds - Create a Guild Profile.
11) Go to Locations - Create a Location Template.
12) Go to Raids - Create a Raid.
13) Go to Profile - Add a Profile to your account.
14) From the Main Page you can now signup for the test raid created above.
If you did all of this and are still having problems, either link your installation or try to be more specific abotu what is happening.
-Vlorn