[Acer Iconia A500] ClydeB1:
I think this is the relevant portion of the logcat when opening Drive Mount: (Details of rom etc in signature)

I/ActivityManager( 170): Starting: Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] flg=0x10000000 pkg=au.dach.drivemount cmp=au.dach.drivemount/.DriveMount bnds=[144,57][240,153] } from pid 413
I/ActivityManager( 170): Start proc au.dach.drivemount for activity au.dach.drivemount/.DriveMount: pid=4127 uid=10105 gids={3003}
D/dalvikvm( 4127): Debugger has detached; object registry had 1 entries
D/su ( 4136): 10105 au.dach.drivemount executing 0 /system/bin/sh using shell /system/bin/sh : sh
W/dalvikvm( 4127): dvmFindClassByName rejecting 'au.dach.drivemount/UnmountedListFragment'
D/dalvikvm( 3591): GC_CONCURRENT freed 254K, 7% free 6418K/6855K, paused 1ms+2ms
D/su ( 4137): 10105 au.dach.drivemount executing 0 /system/bin/sh using shell /system/bin/sh : sh
D/AndroidRuntime( 4127): Shutting down VM
W/dalvikvm( 4127): threadid=1: thread exiting with uncaught exception (group=0x40104760)
E/AndroidRuntime( 4127): FATAL EXCEPTION: main
E/AndroidRuntime( 4127): java.lang.RuntimeException: Unable to start activity ComponentInfo{au.dach.drivemount/au.dach.drivemount.DriveMount}: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
E/AndroidRuntime( 4127):	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748)
E/AndroidRuntime( 4127):	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764)
E/AndroidRuntime( 4127):	at android.app.ActivityThread.access$1500(ActivityThread.java:122)
E/AndroidRuntime( 4127):	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002)
E/AndroidRuntime( 4127):	at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 4127):	at android.os.Looper.loop(Looper.java:132)
E/AndroidRuntime( 4127):	at android.app.ActivityThread.main(ActivityThread.java:4025)
E/AndroidRuntime( 4127):	at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 4127):	at java.lang.reflect.Method.invoke(Method.java:491)
E/AndroidRuntime( 4127):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
E/AndroidRuntime( 4127):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
E/AndroidRuntime( 4127):	at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 4127): Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class fragment
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:688)
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.rInflate(LayoutInflater.java:724)
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.inflate(LayoutInflater.java:479)
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.inflate(LayoutInflater.java:391)
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.inflate(LayoutInflater.java:347)
E/AndroidRuntime( 4127):	at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:223)
E/AndroidRuntime( 4127):	at android.app.Activity.setContentView(Activity.java:1780)
E/AndroidRuntime( 4127):	at au.dach.drivemount.DriveMount.onCreate(DriveMount.java:27)
E/AndroidRuntime( 4127):	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048)
E/AndroidRuntime( 4127):	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712)
E/AndroidRuntime( 4127):	... 11 more
E/AndroidRuntime( 4127): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 4127):	at au.dach.drivemount.PartitionManager.loadPartitions(PartitionManager.java:69)
E/AndroidRuntime( 4127):	at au.dach.drivemount.UnmountedListFragment.onCreate(UnmountedListFragment.java:29)
E/AndroidRuntime( 4127):	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:702)
E/AndroidRuntime( 4127):	at android.app.FragmentManagerImpl.moveToState(FragmentManager.java:905)
E/AndroidRuntime( 4127):	at android.app.FragmentManagerImpl.addFragment(FragmentManager.java:983)
E/AndroidRuntime( 4127):	at android.app.Activity.onCreateView(Activity.java:4141)
E/AndroidRuntime( 4127):	at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:664)
E/AndroidRuntime( 4127):	... 20 more
W/ActivityManager( 170): Force finishing activity au.dach.drivemount/.DriveMount
W/ActivityManager( 170): Activity pause timeout for ActivityRecord{40ce8458 au.dach.drivemount/.DriveMount}
I/ActivityManager( 170): No longer want com.google.android.apps.maps (pid 1911): hidden #16
D/NetworkRequestUtil/ConstructEventRequestPath( 4050): /__utm.gif?utmwv=4.5ma&utmn=1849470693&utmt=event&utme=5(details%3Fdoc%3Dau.dach.drivemount*VIEW_ITEM*)&utmcs=UTF-8&utmsr=1280x800&utmul=en-US&utmac=UA-19761900-1&utmcc=__utma%3D999.714580288.1305172716.1307539668.1307997521.90
D/dalvikvm( 4050): GC_FOR_ALLOC freed 1001K, 14% free 10158K/11783K, paused 31ms
D/NetworkRequestUtil/ConstructPageviewRequestPath( 4050): /__utm.gif?utmwv=4.5ma&utmn=519189134&utmcs=UTF-8&utmsr=1280x800&utmul=en-US&utmp=%2Fhttp%3A%2F%2Fandroid.clients.google.com%2Ffdfe%3Fe%3DDETAILS%26c%3D&utmac=UA-19761900-1&utmcc=__utma%3D999.714580288.1305172716.1307997521.1307997989.91
D/dalvikvm( 3591): GC_EXPLICIT freed 118K, 8% free 6340K/6855K, paused 5ms+1ms
D/NetworkRequestUtil/ConstructPageviewRequestPath( 4050): /__utm.gif?utmwv=4.5ma&utmn=868636586&utmcs=UTF-8&utmsr=1280x800&utmul=en-US&utmp=%2Fhttp%3A%2F%2Fandroid.clients.google.com%2Ffdfe%3Fe%3DRELATED%26c%3D&utmac=UA-19761900-1&utmcc=__utma%3D999.714580288.1305172716.1307997521.1307997989.91
D/NetworkRequestUtil/ConstructPageviewRequestPath( 4050): /__utm.gif?utmwv=4.5ma&utmn=335109365&utmcs=UTF-8&utmsr=1280x800&utmul=en-US&utmp=%2Fhttp%3A%2F%2Fandroid.clients.google.com%2Ffdfe%3Fe%3DRELATED%26c%3D1133713551&utmac=UA-19761900-1&utmcc=__utma%3D999.714580288.1305172716.1307997521.1307997989.91
W/ActivityManager( 170): Activity destroy timeout for ActivityRecord{40ce8458 au.dach.drivemount/.DriveMount}