@Nobless and others

I had the same problem: I forgot to remove previous u-boot before flashing and then replaced REUSEATAGS by OMAPTAG instead of OMAPATAG.

To clean the mess:
- remove u-boot 2012.04-2
- install u-boot 2012.04-1
- remove u-boot 2012.04.1
- install u-boot 2012.04.2
- use the correct OMAPATAG option in item files
- run u-boot-update-bootmenu
- reboot

everything is fine now, but I can't tell you if my boot issue came from
replacing REUSEATAGS with the wrong option name, or the latter AND not removing the previous u-boot in the first place

hope it helps