About one month ago (End of April 2015) Debian 8 became available. While every operating system upgrade brings new features and depreciates old features this upgrade included some features which had a major impact on ERP-Ledger.
Debian 8 came with Perl 5.20 - and this version interprets Unicode in a much stricter fashion. When we started ERP-Ledger after the Upgrade we saw a bunch of "wide character in print" messages but no proper screens. Unfortunately there was no simple fix to this problem but we had to apply a number of different fixes.
These problems have now been solved and we are confident that future versions of Perl won't cause such problems anymore.