When I do just
type RExcel() =
let xlApp = new ApplicationClass()
I've got this Error :
Retrieving the COM class factory for component with CLSID {00024500-0000-0000-C000-000000000046} failed due to the following error: 80040154 Класс не зарегистрирован (Class doesn'registered) (Exception from HRESULT: 0x80040154 (REGDB_E_CLASSNOTREG)).
So maybe I can realize Excel read/write functions some another way.
Added : installed OpenOffice... Version of assembler is 14 ... Maybe I need to use some another .NET library for Excel ?