I need to install an additional Sound Forge 15 Pro computer, so I purchased a SF 18 license, believing I could use it to activate a copy of the older version, but it complains that the SN doesn't match the product. Is there any way to make this work?
Assuming you have the perpetual license for Sound Forge15, it can be activated on two (2) PCs simultaneously. As @SP. stated, a license for Sound Forge 18 cannot be used to activate Sound Forge 15, or visa-versa. The same applies to SF Audio Studio and SF Pro. for instance a license for SF Pro will not activate SF Audio Studio.