The reason you can't attach files is that your support and upgrades expired last Fall and your access has been restricted. You posted into the section for help using this forum, probably because you can't see the sections on our products, for the same reason. I have moved this thread to the Pre-Sales section and we'll help you, but you might want to renew :-) :-)

I was also able to recover the log text that you pasted into the original post and convert it into an attachment.

As Eric Dose pointed out, trying to focus through the Ha filter is difficult. The right way to manage this is to use ACP's filter focus offsets. By doing this, ACP always focuses through Luminance or Red (typically) and when imaging in other bands, it moves the focuser to compensate for the focus difference of that filter. This can be a bit of a challenge on some systems, requiring you to make up a starter FilterInfo.txt with 0 focus offsets but brighter focus stars for your narrow band filters.

The place to start is here, but feel free to ask for more help on this issue :-)