1.1 --- a/AMBuildScript	Sun Mar 11 18:07:24 2012 -0500
     1.2 +++ b/AMBuildScript	Wed Mar 21 21:25:34 2012 -0500
     1.3 @@ -80,8 +80,9 @@
     1.4  						oldhead = head
     1.5  						head, tail = os.path.split(head)
     1.6  					if i.startswith('HL2SDK'):
     1.7 -						(info, sdk) = findDictByKey(self.possibleSdks, 'sdk', i)
     1.8 -						self.sdkInfo[sdk] = info	
     1.9 +						if head != None and head != oldhead:
    1.10 +							(info, sdk) = findDictByKey(self.possibleSdks, 'sdk', i)
    1.11 +							self.sdkInfo[sdk] = info
    1.12  					elif head == None or head == oldhead:
    1.13  						raise Exception('Could not find a valid path for {0}'.format(i))
    1.14  				AMBuild.cache.CacheVariable(i, path)