[Elecraft] K2 12M odd behavoir, "END" message

[Bill Coleman N2BC]

Bear with me, this is strange....  K2 / 06254  built last Fall

A few days ago I fixed a problem on my K2 (low output on 15/12/10). 
Yesterday I finished a complete alignment and today reinstalled the KPA100.

So...  its lashed to a dummy load and I'm stepping through the bands to make 
sure the KPA100 is happy. I get to 12M and the VFO happens to be set to 
25000.00, I tap the key.  No output and I get an "END" message on the 
display.

Move the VFO to inside the band, no more "END" message but still no output. 
Change the power level - now there is normal output!

In fact, if I recreate the setup (freq to 25000.00 or higher, tap the key, 
get "END"), then change to any other band - there is no output until I 
change the power setting.

I couldn't find this mentioned in any of the archives.  Is the firmware 
getting confused or do I have a unique gremlin?  The only reference to the 
"END" msg I can find in the book is CAL PLL.

It's working 100% otherwise.  Would appreciate it if somebody else would 
give this a try!

THX & 73,  Bill  N2BC