Dear Colleague,

Three bugs have been spotted: two in the Dissipative Particle Dynamics (DPD) 
code of DL_MESO version 2.6 and another in one of its utilities.

Both bugs in DL_MESO's DPD code are related to the nfold option used to 
replicate unit cells given in CONFIG files. The first bug is the incorrect 
printing of the unit cell volume in OUTPUT files when the nfold option is used. 
To fix this bug, change line 326 in config_module.f90 to:

  WRITE (nprint, "(1h ,5x,'replicated cell dimensions = ',1p,3e14.6,/,&

When molecules are inserted using positions given in CONFIG files, the code 
currently scans through the wrong number of molecules in the unit cell. (Many 
thanks are due to Annalaura Del Regno at STFC Daresbury Laboratory for bringing 
this bug to our attention.) To fix this bug, change line 1464 in 
start_module.f90 to:

  DO i = 1, nummolcell

and line 1753 in the same module to:

  DO j = 1, nummolcell

The DPD utility used to calculate localised properties, local.f90, may not 
correctly read HISTORY files due to incorrect determination of the end of a 
file. To fix this bug, insert the following immediately after line 223 of 
local.f90:

  eof = .false.

We strongly recommend that all registered users of DL_MESO version 2.6 should 
either make the above code changes or re-download the package using the 
instructions received on registration to get the corrected version of the 
software. Re-registration is not required and the same password is used for 
decryption.

Michael Seaton
2016-07-11