App crashes when using lowercase letters in the recurrence pattern

[OpaOpa]

I wanted to set a yearly recurrence pattern for a scheduled transaction.
Typing everything in uppercase works fine.

Steps to reproduce the bug:
1. Create a new scheduled transaction
2. Go to set a "Geeky" recurrence pattern
3. Set the following rule: FREQ=yearly;BYMONTH=12;BYMONTHDAY=20

The following occurred on my attempt:
1. Clicking the "evaluate dates" popped the following error: IllegalArgumentException:interval@FREQ=yearly;BYMONTH=12;BYMONTHDAY=20#
2. Clicking the OK button returns to the transaction edit screen with no errors and...
3. Clicking the "Save" button crashes the app with a "force close" message.
4. From now on, trying to access the Scheduled menu crashes the app 100%.

[Edit] - The bug reproduced on a clean install too.

Environment:
- Android 2.2.1 (FroydVillain 1.7.2 based on CM 6.1)
- Financisto v. 1.4.4

Hardware:
- HTC Hero