Error when running compile_iss

`RInno::install_inno` returns the "Unsupported 16-Bit Application" error, and I have to use `installr::install.inno()`. But setting that aside...

After running the following:

`install.packages("RInno")`
`require(RInno)`
`installr::install.inno(quick_start_pack = TRUE)`
`example_app(app_dir = "app")`
`create_app(app_name = "myapp", app_dir = "app")`
`compile_iss()`

The Inno Setup Compiler pops up with the following error: "The system cannot find the file specified.".

The Command Prompt has been disabled by my administrators at work. Do I need to have access to the command prompt for this to work properly?