Hi all, I'm using the distributed Refmac version 5.5.0109 (OS = Centos
4.6) and I get this cryptic error message at the end of cycle 13:

           1
  0.3931933       1.013090      8.5092507E-02 -2.2578495E-02 -0.1768152
-0.1084905
  2.9251081E-04  2.0343070E-03  3.6935641E-03 -8.4393099E-04
3.7736616E-05 -8.1993081E-04
  1.7520475E-03  6.3033602E-03  8.0644749E-03  1.2155819E-03
-2.8136030E-03 -1.0205148E-02  1.1736480E-02 -2.7233852E-02
 -3.6240614E-03
 Problem
 xyz        10446   1.977153      -4.287523       4.657890
-3.8452903E-03  0.5033807      0.8756923      0.1101464
-6.6662721E-02 -
0.1923930     -0.1637010     -3.8452903E-03  0.5818514      0.9112133
-0.3702289     -0.9259773     -7.4138783E-02

The first few lines of numbers look like TLS tensors to me, so it looks
like it comes from this piece of code in tls_allocate.f :

   1596                   call find_min_eigen(u_aniso(1,ia),u_min)
   1597                   if(u_min.lt.0.0) then
   1598                      write(*,*)im
   1599                      write(*,*)tmat(1:6,idom)
   1600                      write(*,*)lmat(1:6,idom)
   1601                      write(*,*)smat(1:8,idom)
   1602                      write(*,*)uover_atom
   1603                      write(*,*)'Problem'
   1604                      write(*,*)'xyz ',ia,x,y,z,u_min,
   1605      &                    u_aniso(1:6,ia),evalue,uaniso0(1,1:3)
   1606                      stop
   1607                   endif
 
Looks like it's complaining about a negative eigenvalue of the Uaniso
tensor but I thought Refmac could handle those??

Any thoughts?

Cheers

-- Ian


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