SH ERROR

[Silvio]

Error: Unresolved external '__bset' referenced from C:\WORK\FWH\LIB\FIVEHC.LIB|SHFILE


my code
@ 210,150 RBBTN oBtn[3] PROMPT cBtn_Annulla OF oDlg BITMAP "BTN_NO" LEFT SIZE 60,18 PIXEL ;
ACTION SHRestartWindows( oDlg:hWnd, "Restart Windows -" + CRLF + CRLF )