OMA Stand-alone v 2.0.0

in parameters.drw if you set according to description:

_# Infer the Hierarchical Orthologous Groups (HOGs)? 
_# In OMA standalone prior to 2.0 you can activate the inference of HOGs 
_# through the Top-Down algorithm by setting 'DoHierarchicalGroup' to 'true'. 
_# Since 2.0, you should set it to 'top-down' or 'bottom-up'. The later is 
_# as of now still an experimental feature, where as 'top-down' uses the 
_# algorithm of before. You can disable the HOG computation by setting it to  
_# 'false'. 
_#DoHierarchicalGroups := 'top-down';
DoHierarchicalGroups := 'false';

, you get following (presumably) critical errors and calculation halts :

DoHierarchicalGroups should be 'top-down' or 'bottom-up', not 'false'.
Error, (in _check_HOG_params)

if you uncomment the DoHierarchicalGroups parameter you get:

Error, (in _check_HOG_params) DoHierarchicalGroups should be 'top-down' or 'bottom-up', not 'dohierarchicalgroups'.