For Loop Error "error: expected identifier or '(' before '[' token"

[chiques]

I am receiving this error various times

..\src\using-gpib_dll.c:97:18: error: expected identifier or '(' before '[' token

The problem appears to reside inside my for loop:

for (loop = 0; loop < 30; loop++)
   {
      Instruments[loop] = (Addr4882_t)(loop + 1);
   }

For some reason, 'Instruments[loop]' is not being detected as the declared array (see attached code). Did I declare it wrong?

Thank you for any help.