Dear Colleague,

A number of bugs have been found in some of the utilities of DL_MESO 2.6.

Two of the utilities for the Dissipative Particle Dynamics (DPD) code - 
convert-input.cpp and molecule-generate.cpp - and one of the utilities for the 
Lattice Boltzmann Equation (LBE) code - lbeplot3dgather.cpp - all include 
assignment to a Boolean variable based on the existence of a file input stream. 
This had been carried out directly in these utilities, but compilers (e.g. GCC 
6) using more recent C++ standards (e.g. C++14) produce errors identifying 
incompatibilities in converting input file stream types to Booleans. Note that 
compilers using earlier C++ standards can often still compile these utilities 
without modification. (Many thanks are due to Jernej Zidar at the Institute of 
High Performance Computing, Singapore, for identifying these bugs and suggesting 
the fixes below.)

To fix these bugs, line 1174 in convert-input.cpp and line 1136 in 
molecule-generate.cpp can be changed to:

  return (bool)ifile;

and line 126 in lbeplot3dgather.cpp can be changed to:

  all data = (bool)myfile1;

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 as the decryption password has not 
changed.

Michael Seaton
2017-12-01