[Konstantinos]

When a run time error occurs while executing a command, it gives the unknown command message. So load crashdetect plugin (https://github.com/Zeex/samp-plugin-...es/tag/v4.15.1) and compile with -d3 (https://github.com/Zeex/samp-plugin-...ith-debug-info).

I'll guess that run time error 4 is caused because of GetCasa(playerid) function which returns a value that goes off-bounds with the size of array "Casa". Though, let's see what crashdetect will print to be sure.