Original Forum Thread:
http://forum.nucleuscms.org/viewtopic.php?t=19788

Solution (thanks, ftruscot!):
This menu item was renamed in Nucleus version 3.33 to "Configuration" and is located within the links on the left navigation bar of the Administration Area, under "Action Log".

Original Forum Thread:
http://forum.nucleuscms.org/viewtopic.php?t=19809

Solution (thanks, ftruscot!):
In your individual settings for the blog, make sure the field Max Amount of Comments is set to 0.

Solution:
Nucleus does not allow HTML in its comment forms by default as this poses a large security risk. It is recommended to use a plugin if you wish to allow formatting in comments.

Solution:
This requires a small core hack. Open /nucleus/media.php and find this bit of code:

// defines how much media items will be shown per page. You can override this
// in config.php if you like. (changing it in config.php instead of here will
// allow your settings to be kept even after a Nucleus upgrade)
$CONF['MediaPerPage'] = 10;

A simpler solution as per the comments in media.php is to simply add this line to your config.php file:

$CONF['MediaPerPage'] = X;

Original forum thread:
http://forum.nucleuscms.org/viewtopic.php?t=18728

Solution:
Make sure your copy of index.php has its file permissions set correctly on your server to 644.

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18242

Plugin NP_PluginName was not loaded (Class not found in file, possible parse error)

Solution:
Please check the following:

• The file name of the plugin must have the same case as the actual plugin code. For example, if the plugin code says:

  class NP_PluginName extends NucleusPlugin {

  
  you need to make sure your plugin file is called NP_PluginName.php.
• The permissions of your plugin file are set to 644 so your web server can read the file correctly.

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18237

How do I fix this?"

Solution:
Double check and make sure you have done the following:

• All plugin files should be of the form (case matters): NP_PluginName.php and the corresponding folder (if it exists) should have a name of (again case matters): pluginname.
• Make sure the file permissions for the php files are set to 644.
• Make sure the folder permissions are set to 755.

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18602

Solution:
Use the new skin variable <%currentcat%> to generate your CSS class. This variable will return either a "yes" value if the current category is active or a "no" value if the category is not the currently active category.

In the "Category List Item" section of your template, put something like this in the html tag you are using to generate your category list (e.g. a li tag, etc):

class="currcat<%currentcat%>"

In your .css file, make sure you define the CSS classes .currcatyes (for the current active category) and .currcatno (for all other categories) as desired.

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18549

Solution:
Yes, you can!

1. Find the language file for your language (e.g. /nucleus/language/english.php. Make a backup of this file before you make any changes!
2. Look for the constants _QMENU_INTRO and _QMENU_INTRO_TEXT.
3. Change their values to whatever you want.
4. Remember to keep a backup of your modified language file, as it will be overwritten then next time you upgrade Nucleus.

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18578

PHP Warning: tmpfile() [function.tmpfile]: open_basedir restriction in effect. File(/tmp) is not within the allowed path(s): (/xxx) in xxx/nucleus/libs/skinie.php on line 143, referer: http://xxx/Nucleus/nucleus/index.php?action=skinieoverview

How do I fix this?!"

Original forum thread (thanks, ftruscot!):
http://forum.nucleuscms.org/viewtopic.php?t=18402

Solution:
This may be due to your host have PHP safe_mode turned on. You can fix this by doing the following core hack:

1. Using your host's file manager or your FTP browser, create a new folder somewhere in your public directory and call it /tmp/.
2. Open up /nucleus/libs/skinie.php and go line line 145 and find this code:
   

   		$temp = tmpfile();
   		fwrite($temp, $tempbuffer);
   		rewind($temp);
    
   		while ( ($buffer = fread($temp, 4096) ) && (!$metaOnly || ($metaOnly && !$this->metaDataRead))) {
   			$err = xml_parse( $this->parser, $buffer, feof($temp) );
   			if (!$err && $this->debug)
   				echo 'ERROR: ', xml_error_string(xml_get_error_code($this->parser)), '';
   		}
    
   		// all done
   		$this->inXml = 0;
   		fclose($temp);

3. Replace with this code:
   

         $tmpfile = tempnam( '/path/to/writable/folder/', 'tmpfile') or die('could not create file');
         $temp = fopen($tmpfile,'w+');
         fwrite($temp, $tempbuffer);
         rewind($temp);
    
         while ( ($buffer = fread($temp, 4096) ) && (!$metaOnly || ($metaOnly && !$this->metaDataRead))) {
            $err = xml_parse( $this->parser, $buffer, feof($temp) );
            if (!$err && $this->debug)
               echo 'ERROR: ', xml_error_string(xml_get_error_code($this->parser)), '';
         }
    
         // all done
         $this->inXml = 0;
         fclose($temp);
         unlink($tmpfile);

   You will need to make sure that you replace /path/to/writable/folder/ with the path to the folder /tmp/ you created above. Save your changes and you should be done!