When running setup you're always asked to select the destination path. If you already have LVP installed, there's a regkey pointing to it's path at:
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Clearcove Limited\LogViewPlus\Path
Can you tweak the installer to check it's existence, and "If Exists" pre-fill the install path in the installer for us so we can just quickly click through the setup rather than have to stop and drill down to where we installed it? Those of us with tons of software often forget offhand where we put things and when we have to drill down for these already installed apps, we have to go digging around things like start menu shortcut properties and such just to remember where it was install to.
It's a small, but common Quality of Life improvement. 