I was able to install Kindlet Jailbreak, get usbnet running, SSH into the device, and install the dev keys. After that, installing Collections Manager was pretty simple.
When I ran it, it got stuck at the "www.ixtab.tk" splash screen. The log was full of multiple copies of this exception trace:
Code:
[10/7/12 5:21 PM] Collections Manager (v. 1.3.3)
java.lang.NoClassDefFoundError: com.amazon.kindle.booklet.ChromeException
at com.mobileread.ixtab.collman.CollectionManagerKindlet.initUiAfterSplash(CollectionManagerKindlet.java:70)
at com.mobileread.ixtab.collman.CollectionManagerKindlet.access$1(CollectionManagerKindlet.java:66)
at com.mobileread.ixtab.collman.CollectionManagerKindlet$2.run(CollectionManagerKindlet.java:51)
at java.awt.event.InvocationEvent.dispatch(Compiled Method)(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Compiled Method)(Unknown Source)
at java.awt.EventQueueProxy.dispatchEvent(Compiled Method)(Unknown Source)
at java.awt.AGUIEventDispatchThread.pumpOneEventForHierarchy(Compiled Method)(Unknown Source)
at java.awt.AGUIEventDispatchThread.pumpEventsForHierarchy(Compiled Method)(Unknown Source)
at java.awt.AGUIEventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
at java.lang.Thread.startup(Unknown Source)