Ubuntu – “Show in folder” in google chrome is not working

You might not need to delete your whole user profile. I was able to fix this by deleting my download history alone: Downloads > Clear All.

I diagnosed this as per these instructions:

$ sqlite3 ~/.config/chromium/Default/History

sqlite> select count(*) from downloads;
sqlite> select count(*) from downloads_url_chains;

The two counts differed, suggesting that the database had become corrupt. I backed it up (you never know) then cleared the download history. Chromium hasn't crashed since.

this problem some time occurs when you have not installed google-chrome package of proper architecture ( when install 32bit package on 64bit machine). then it require some packages like overlay-scrollbar-gtk2 , unity-gtk2-module,libcanberra-gtk-module:i386 etc. so, either install these packages or uninstall google-chrome and reinstall proper architecture packages.
after uninstall google-chrome install it again using following steps:

download correct packages from here
install it using command

sudo dpkg -i google-chrome-stable_current_amd64.deb 

if it fail then install dependencies by running command then install again.

sudo apt-get install -f
sudo dpkg -i google-chrome-stable_current_amd64.deb 

now run command on terminal

google-chrome

or

google-chrome-stable

i have tested it by installing on ubuntu 14.04.