Bummer!
55 degrees should be alright for the DX330, although it's always best to have paint and part at the same temp.
I don't think that caused the fisheyes, though.
Fisheyes are always caused by contaminant on the part. In that cold, the most likely cause is that the cleaner did not have time to fully evaporate before you sprayed. It settles in to little imperfections, like little land mines ready to destroy your spray!
I tried many of the recommended "cleaning" products over the years, but found they evaporate much slower than simple laquer thinner. I now always clean with the same thinner I am using in the paint I plan to spray. Then, leave enough time to make sure it evaporates. Just remember, at 55 degrees evaporation is pretty slow, so wait a good 30 minutes or so.
I know how you feel...been there many times...
John