On my case my sql server path was very long

D:\Software\en_sql_server_2008_r2_enterprise_x86_x64_ia6t4_dvd_520517\en_sql_server_2008_r2_enterprise_x86_x64_ia64_dvd_520517\setup.exe

I just renamed that to

D:\Software\sql server\sql server\setup.exe

then work fine for me

😀