Synergy Classic client GUI troubles

Trouble: classic client running on Linux RH 5 machine behaves oddly:

- right-click does not work,
- no way to select more than one item at at time (several files in the tree view, or two versions on history view),
- mouse single click responding as a double-click should,
- backspace character typing garbage,
- strange fonts ...

What helps:

1. Make sure NumLock key is disabled. Vendor also suggest checking the CapsLock key.

2. Synergy Classic client GUI is governed by the number of setup files, that define fonts, colors and other application GUI qualities.

Original "CM Synergy - X Resource File" file Ccm is located in $CCM_HOME/etc contains the most of the setting. Upon machine setup this file has to be copied to the local X directory:

root# cp $CCM_HOME/etc/Ccm /usr/lib/X11/app-defaults

If you do not have root over the Linux machine try to copy the Ccm file into your home directory:
user# cp $CCM_HOME/etc/Ccm ~/

Also,

(found on vendor site)

If during ccm start, messages about undefined X attributes are displayed ...

If errors indicating undefined X attribtues are seen duing a Synergy session startp, it is possible the Ccm X app-defaults file isn't being found or was incorrectly installed, or there may be an incompatibility with the user's environment settings (i.e., XAPPLRESDIR, XFILESEARCHPATH or XUSERFILESEARCHPATH may be set).

This issue also can typically be resolved by copying the Ccm file from $CCM_HOME/etc to the user's $HOME directory. If the user is using XAPPLRESDIR, XFILESEARCHPATH or XUSERFILESEARCHPATH, add the location of the Ccm file to one of those paths. Stop and restart the CCM session to validate the solution.