yes focuser seems ok, when I connect to it info are loaded in FM (like focuser position and I can move it with TCFS tool)
All field are empty when I start FM indeed
but them come back when I load the ini file.
There is this "path" link that I guess should point to these settings, but I do not remember how to generate it.
was it in the whole ACP installation process that would need to be done again ?

When I select Maxim DL I get the crash indicated here


I can install new FM4 but then I'm not sure it will work with my old ACP ?

Yes yes an upgrade is planned but we need to go on site for that (an other coputer is needed).