Can any one help me that how will we set    'Is Valid'  to class and trigger

 what will happen if it is unchecked 

Thanks in  Advance

Can any one help me that how will we set    'Is Valid'  to class and trigger

 what will happen if it is unchecked 

Thanks in  Advance

Does anytone know where there is documentation that describes what can/cannot be used in the destructiveChanges.xml file?  I didn't see a list in the migration tool guide 22 or 23.

Hi, I'm new to the Migration Tool and am finding it difficult to get working.  I have been through the guides and can't find any help on the problem I'm having.

This is the error I am receiving:

 Macintosh-3:DevGuide collinbrown$ ant
Buildfile: build.xml

InitUsers:

BUILD FAILED
/Users/collinbrown/Documents/BACR/Salesforce/DevGuide/build.xml:170: Problem: failed to create task or type antlib:com.salesforce:deploy
Cause: The name is undefined.
Action: Check the spelling.
Action: Check that any custom tasks/types have been declared.
Action: Check that any <presetdef>/<macrodef> declarations have taken place.

This appears to be an antlib declaration.
Action: Check that the implementing library exists in one of:
        -/usr/share/ant/lib
        -/Users/collinbrown/.ant/lib
        -a directory added on the command line with the -lib argument


Total time: 0 seconds

Any help will be greatly appreciated!

Collin