********> bugfix.15
Author:   Bill Ross
Date:     5/28/02

Programs: Carnal

Severity: Moderate

Description:  Exits when trying to load pdb for which prmtop
	indicates a box is expected. Needs to use box from 
	prmtop.

Fix: apply the following patch to amber7/src/carnal/util.c:
-------------------------------------------------------------
*** OLD util.c
--- NEW util.c
***************
*** 1442,1447 ****
--- 1442,1459 ----
  	int	j, n;
  	double	dum, dum2;
  
+ 	if (format == PDB) {
+ 		if (!prm->IfBox) {
+ 			printf(" -- no box in parm!\n");
+ 			exit(1);
+ 		}
+ 		printf("Using prmtop box for %s\n", name);
+ 		f[0] = prm->Box[0];
+ 		f[1] = prm->Box[1];
+ 		f[2] = prm->Box[2];
+ 		return;
+ 	}
+ 
  	/*
  	 *  skip to end of line
  	 */
***************
*** 1475,1481 ****
  			f[2] = prm->Box[2];
  			return;
  		} else {
! 			printf("Can't get box - exiting\n");
  			exit(1);
  		}
  	}
--- 1487,1493 ----
  			f[2] = prm->Box[2];
  			return;
  		} else {
! 			printf("Can't get box from %s - exiting\n", name);
  			exit(1);
  		}
  	}
-------------------------------------------------------------