Thanks t4n2804. I'll see if that helps when I have the same issue. Might help locate the cause.
I also have a little bit of extra info. Queued up 10 corvettes on Ice 132, making sure there was enough space in my warehouse before I started the builds. After setting the queue, I went about managing other planets. During this, a msg popped up stating Ice 132's warehouse was full. Opened up Ice 132's warehouse system, seeing 461/500 warehouse slots used, so not a lot of free space, but free space none the less. Checked the queued ships - 6 were stuck on 0 cycles, checked the factory - components being built were stuck on 0 as well.