Hi SW
You should not need to disable your anti-virus.
Some ant-viruses like AVG will block certain applications that contain exe.
HSIE may be looked at as Malware and as soon as you click on it a blocking notice will come up.
If you have any problems just add an exception to both your firewall and computer settings, this is quite easy to do by browsing to where the exe is and excepting it.
There is no manual for the 2015 LSH3 version that is why I produced all the tutorials in English.
There is a full German version if you can understand it.
The LSH3 team are German speakers who do not have a good knowledge of English.
The 2017 LSH3 version I am told will have a proper manual,video or both.
Everything you need to know is in my tutorials although I have not covered OLC just the basic settings.
There is a large game manual for the previous LSH3 version in English with some useful information in it.
HSIE and SH3Commander both come with good instructional manuals.
Peter