When selecting a parent folder from the file browser list ("up to folder xy"), there's a Toast showing up: "length=0; regionStart=0; regionLength=-1". Could this be caused by a space in the parent folder name? logcat tells me:
E/com.boxcryptor.android.r(31485): exception
E/com.boxcryptor.android.r(31485): java.lang.StringIndexOutOfBoundsException: length=0; regionStart=0; regionLength=-1
E/com.boxcryptor.android.r(31485): at java.lang.String.startEndAndLength(String.java:593)
E/com.boxcryptor.android.r(31485): at java.lang.String.substring(String.java:1474)
E/com.boxcryptor.android.r(31485): at com.boxcryptor.android.bt.b(Unknown Source)
E/com.boxcryptor.android.r(31485): at com.boxcryptor.android.bt.a(Unknown Source)
E/com.boxcryptor.android.r(31485): at com.boxcryptor.android.r.onItemClick(Unknown Source)
E/com.boxcryptor.android.r(31485): at eu.erikw.PullToRefreshListView$PTROnItemClickListener.onItemClick(Unknown Source)
E/com.boxcryptor.android.r(31485): at android.widget.AdapterView.performItemClick(AdapterView.java:292)
E/com.boxcryptor.android.r(31485): at android.widget.AbsListView.performItemClick(AbsListView.java:1060)
E/com.boxcryptor.android.r(31485): at android.widget.AbsListView$PerformClick.run(AbsListView.java:2516)
E/com.boxcryptor.android.r(31485): at android.widget.AbsListView$1.run(AbsListView.java:3170)
E/com.boxcryptor.android.r(31485): at android.os.Handler.handleCallback(Handler.java:605)
E/com.boxcryptor.android.r(31485): at android.os.Handler.dispatchMessage(Handler.java:92)
E/com.boxcryptor.android.r(31485): at android.os.Looper.loop(Looper.java:137)
E/com.boxcryptor.android.r(31485): at android.app.ActivityThread.main(ActivityThread.java:4424)
E/com.boxcryptor.android.r(31485): at java.lang.reflect.Method.invokeNative(Native Method)
E/com.boxcryptor.android.r(31485): at java.lang.reflect.Method.invoke(Method.java:511)
E/com.boxcryptor.android.r(31485): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:787)
E/com.boxcryptor.android.r(31485): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:554)
E/com.boxcryptor.android.r(31485): at dalvik.system.NativeStart.main(Native Method)