'An error has been encountered in the rich text object (35)' - Unable to open any CSR (231959)

When you try to open any CSR in the Stat client, the following messages appear:

'An error has been encountered in the rich text object (35) Error calling external object function load at line 95 in function uf_rtffrommemory of object uo_richtext...

If problem persists, restart the application'

or

'An application error has occurred. Please note the following information and notify the System Administrator.

Error (35) Error calling external object function load at line 95 in function uf_rtffrommemory of object uo_richtext., WinMenu: uo_richtext, Object: uo_richtext, Script: uf_rtffrommemory, Line 95, Version: 6.0.0'

This issue may only be seen on one machine, where others work correctly.