You are trying to install x64 on a 32-bit Windows (or vice versa). Download the correct architecture.
Select the installation language (Default is English, but French, German, Spanish, and others are available). nitro pro 9515 final x86x64 install
Download the Nitro Pro 9.5.1.5 Final x86/x64 installation file from the official website or a trusted source. The file should be named Nitro.Pro.9.5.1.5.x86.x64.zip or similar. You are trying to install x64 on a