Could not find game installation directory -- please join a lobby and run game diagnostics
like this one:
http://www.voobly.com/forum/thread/245831

Hi
Please do this steep https://support.voobly.com/display/vkb/KB1053+Clean+installation+of+Voobly+client
After this please do this https://support.voobly.com/display/vkb/KB1019+Clean+installation+of+Age+of+Empires+II+with+the+latest+patches and install ur game again like this http://www.voobly.com/forum/thread/199974
Try if this solved ur problem.

still the same

hi
does the game run ok off of voobly completely? do you have the cd's or steam version?
check you only have one install of the game. C:program files[86]/ microsoft games/
log in through the web site. choose a lobby. when you get the screen shown, click choose and find the game exe. then click ok.
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game runs perfectly fine without the voobly
when i open a looby it says downloading update... then it says "Could not find game installation directory -- please join a lobby and run game diagnostics"
another guy posted this a screenshot that is same as mine
http://www.voobly.com/forum/thread/245831

hi
did you direct voobly to game exe as shown above?
try removing any game mods you have installed. reboot the pc and then see.

not just the mod....cant download anything from the site.
And when i try to browse voobly then cloudflare **** shows up everytime (CAPTCHA)
never happened that before like ever
and as i said game works fine without the voobly
i was just away for 3 months...wanted to start playing from this month and this problem shows up

you seem ok now?