upgraded to Android SDK 1.5r3 - perm problems

I upgraded to SDK 1.5r3 and updated my /usr/local/android link and then got errors in Eclipse: my projects wouldn't compile. I checked the error log and got distracted by an error that doesn't even matter:

Plug-in com.android.ide.eclipse.adt was unable to load class com.android.ide.eclipse.adt.project.NewXmlFileWizardAction.

The real problem with the SDK was that the $ANDROID_HOME/tools and $ANDROID_HOME/platforms/android_1.5/tools contained important executables but the files weren't actually executable. I did 'sudo chmod 755 *' in the tools directories and restarted Eclipse.