yes i´ve used the correct installer, the installtation did run well.
After i´ve made the update with the Halion 6 installer, I also tried the single installer for Halion Sonic 3.
The info menu still shows Version 3.0.0.18 from January.
Could it be you originally copied the vst .dll into another folder and you’re not getting the updated one in its usual place in C:\Program Files\Steinberg\VSTPlugins\HALion Sonic ?
No, the folders are at the original installation place.
But i can see that the installer has created VST 2 folders with the latest VST2 versions of Halion 6 and Halion Sonic 3, although i only have had a vst 3 installation of these instruments on my system.
The VST3 version has not been updated.
Only the Halion Sonic.srf file in the VST3 Folder was overwritten with the latest Version from 30.05.2017 !