Numbers taken from the data files and calculated in Excel Anti-Fighter (Anti-VeryLight damage): <td class="xl25" style="width: 48pt; height: 12.75pt; background-color: transparent; border: windowtext 0.5pt solid;" width="64" height
I've tested it with 4 squad types and 2 command points, and it didn't crash. So as Dolynick thought, duplicating the squadtypes (ie 2 slots of fighters, 2 slots of bombers) fixes the bug... upto 4 command points anyhow. I haven't tried any command points greater than 4 though.
For those getting link errors, it appears the links to the forum posts have changed. example: The Mars Effect link: https://forums.sinsofasolarempire.com/editpost/?forumid=443&aid=301007 gives a 404 error. but if you delete the " editpost/?forumid=443&aid= " and make it as: https://forums.sinsofasolarempire.com/301007 Then the link works.
