This wiki is not the appropriate place to seek support with game bugs but the following info can help you find help in case you arrived here first.
Please note that reports involving modified games will be ignored by Egosoft. There are so many opportunities for wild-goose chases, it's not worth their time if we have not invested a bit of time ourselves trying to narrow down whether the issue is present in unmodified (AKA "vanilla") games or not.
General info on bug reporting can be found here. Before posting a bug report on the forum, have a quick here to make sure it it isn't one of the common, known issues.
Use of the handy in-game debug log, which can help coders work our what may be going wrong, is explained here.