[NMusers] Problem with initial values of the omega matrix with nonmem 7.6

[Sebastiaan Sassen]

Dear colleagues,

I ran into a problem with the omega matrix in nonmem 7.6 for a model I received 
(simple FOCE+I advan3 trans4 nothing special).

In the model file it is specified like this (I tried different notations as 
simple decimals, scientific notation etc. to no avail):

$OMEGA BLOCK(3)
  0.107                ; CL
   0.48E-1 0.11           ; V1
   0.42E-1 0.56E-1 0.084  ; V2


However, with nonmem 7.6 I get a problem with the initial estimates of omega. 
If I look at the list file I see that it is due to my omega block, which makes 
sense as the correlations between these values used as initial values of etas 
are not valid (outside of -1,1). However, these initial estimates are not the 
ones I provided. Compare this to the same exact model ran on nonmem 7.4.4. Here 
the initial omega estimates are as described in the model and it runs well.

Even in a clean folder without any files other than the dataset (csv) and the 
model file (mod).
Am I doing something wrong or is this something else?

Nonmem 7.6:

INITIAL ESTIMATE OF OMEGA HAS A NONZERO BLOCK WHICH IS NUMERICALLY NOT POSITIVE 
DEFINITE

0INITIAL ESTIMATE OF OMEGA:
 BLOCK SET NO.   BLOCK                                                          
          FIXED
        1                                                                       
            NO
                  0.1000E+01
                  0.4000E+01   0.1000E+01
                  0.4000E+01   0.5000E+01   0.8000E+01


Compared to nonmem 7.4.4, which seems to do this correctly:
    
0INITIAL ESTIMATE OF OMEGA:
 BLOCK SET NO.   BLOCK                                                          
          FIXED
        1                                                                       
            NO
                  0.1070E+00
                  0.4800E-01   0.1100E+00
                  0.4200E-01   0.5600E-01   0.8400E-01

Best regards,

Sebastiaan