grails create-tag-lib
is the correct value at least for Grails 1.0.3. Which version of grails do you use?

I'm using Grails 1.0.3 and it should be really grails create-taglib (and not createtag-lib)

I checked out the Grails docs and found out that it's wrong stated in the Grails docs.
I just created a JIRA in the Grails project to fix the documentation: http://jira.codehaus.org/browse/GRAILS-3526

Hope it can be fixed for the GA release of NetBeans 6.5

Workaround is to use the command prompt to create the taglib.

Typo: I meant I'm using Grails 1.0.3 and it should be really grails create-taglib (and not create-tag-lib)

Please can you be more specific about the bug and steps to reproduce?

In my Grails 1.0.3 "grails create-tag-lib" works just fine form NetBeans as well as from command line. It is perfect
match with documentation and also "grails help" provide following:

Welcome to Grails 1.0.3 - http://grails.org/
Licensed under Apache Standard License 2.0
Grails home is set to: /home/sickboy/frameworks/grails-1.0.3		
		
Base Directory: /media/data/release65
Note: No plugin scripts found
Running script /home/sickboy/frameworks/grails-1.0.3/scripts/Help.groovy
Environment set to development

		Usage (optionals marked with *): 
		grails [environment]* [target] [arguments]*

		Examples: 
		grails dev run-app	
		grails create-app books

		Available Targets (type grails help 'target-name' for more info):
...
grails create-app
grails create-controller
grails create-domain-class
grails create-integration-test
grails create-plugin
grails create-script
grails create-service
grails create-tag-lib
grails create-unit-test
...

Are you sure that you (or some program) haven't renamed CreateTagLib.groovy to CreateTaglib.groovy as the command is
derived from script name?

To be sure I've just downloaded the fresh Grails 1.0.3 from the website and it contains CreateTagLib.groovy, so the
command is create-tag-lib. I think grails doc as well the IDE are fine.

This is getting funny ;-)

I also just found out that my Grails scripts folder contained CreateTagLib.groovy.

So Groovy plugin and Grails docs are fine indeed. No issue at all. However cannot explain my problem for now.
I'm using a unchanged Grails package.

Found the problem. It was related to compiled script classes in my documents.
After clearing the cache everything works fine (both from Netbeans and command line).

I cannot explain why my Grails folder contained CreateTagLib.groovy and my compiled cached scripts CreateTaglib****

I also got confused by (old Grails documentation) http://grails.org/Command+Line where it's stated to use create-
taglib.

Sorry for confusion.