Not sure what simulator you are using or what operating system you use.
Aerosoft website shows a system requirement for Anchorage X as windows 7, FSX SP2, boxed or FS2004, so I assumed it was built on a 32 bit platform and I'm using FSX-Steam with windows 10, 64 bit platform. Aerosoft does not specify win 10, FSX-Steam for Anchorage X. So, I have to trust Aerosoft's requirements, unless there's a work around patch available.