I have a system running Windows 7 64-bit pro which has both Delphi 2007 and Delphi XE2 installed.
When translating, the D2007 works just fine but XE2 just gives the message 'Make sure the Dictionary Manager is properly installed'. I have unistalled then installed TsiLang with the same results.
I know I'm probably missing the obvious but would appreciated any help you can give.
When using the SILeditor directly from the Start menu, the Dictionary manager works as expected.
When trying to translate from within XE2 the error message box still appears. (Delphi XE2 with Update 4)
It looks like somehow an registry entry and user access rights problem. Could you please try the following: download the stand-alone Dictionary Manager setup from our web site and install it on your PC. May be this will resolve it.