You should have al least this folder
\iGO8 , with igo8.exe and data.zip and some other files
and on igo8 this subfolder
\iGO8\CONTENT
\iGO8\DEFAULTS
\iGO8\LICENSE , this should have a lic file
\iGO8\video_dlls
\iGO8\CONTENT\DEM
\iGO8\CONTENT\LANG
\iGO8\CONTENT\MAP
\iGO8\CONTENT\POI
\iGO8\CONTENT\speedcam
\iGO8\CONTENT\VOICE
Because i dont have any lic file for z112 if you want you can try this working z115 version .