i have seen other question on stackoverflow about thi topic but for me is different
this is my scenario (on ubuntu)
airone@airone:~/LibUsbDotNet_Bin.2.2.8$ sudo mono Test_Info.exe
WARNING: The runtime version supported by this application is unavailable.
Using default runtime: v4.0.30319
The assembly mscorlib.dll was not found or could not be loaded.
It should have been installed in the `/usr/local/lib/mono/4.5/mscorlib.dll' directory.
airone@airone:~/LibUsbDotNet_Bin.2.2.8$
in mono directory i get this
airone@airone:/usr/lib/mono$ ls -l
totale 148
drwxr-xr-x 2 root root 4096 dic 7 13:44 2.0
drwxr-xr-x 2 root root 20480 dic 13 01:24 2.0-api
drwxr-xr-x 2 root root 4096 dic 13 01:24 3.5-api
drwxr-xr-x 2 root root 12288 dic 13 01:24 4.0
drwxr-xr-x 2 root root 20480 dic 13 01:24 4.0-api
drwxr-xr-x 4 root root 20480 dic 13 01:27 4.5
drwxr-xr-x 3 root root 24576 dic 13 01:24 4.5-api
drwxr-xr-x 3 root root 4096 dic 7 13:44 aot-cache
drwxr-xr-x 2 root root 4096 dic 7 13:42 compat-2.0
drwxr-xr-x 234 root root 12288 dic 7 13:49 gac
drwxr-xr-x 2 root root 4096 dic 13 01:24 lldb
drwxr-xr-x 3 root root 4096 dic 7 13:44 mono-configuration-crypto
drwxr-xr-x 2 root root 4096 dic 13 01:27 monodoc
drwxr-xr-x 5 root root 4096 dic 7 13:42 xbuild
drwxr-xr-x 4 root root 4096 dic 7 13:42 xbuild-frameworks
airone@airone:/usr/lib/mono$
in 4.5 there is thath file
airone@airone:/usr/lib/mono/4.5$ ls -l | grep msco
-rw-r--r-- 1 root root 1525760 dic 13 01:46 mscorlib.dll
airone@airone:/usr/lib/mono/4.5$
that drives me crazy
who help me ? thanks