Can't seem to save a check star

Hei Geir,

I'm having trouble saving a check star.  I've been trying to process my U Gem run from Feb 17 UT.  When I tried the time series, it says something to the effect of "you don't have a check star".  So I take a sequence, say u_gem_new3, add a check star, and save it as u_gem_new4. 

I try to do the time series, and it says:  "you don't have a check star".  Sure enough, I open a U Gem image, select sequence u_gem_new4, and the check star is gone!

Do we have to start from scratch if we're trying to set up a new sequence?

Thanks,

--Bill