From the Lead or Account Detail screen, if you click the Log Call button you get the screen to enter the info. If you click the Date Picker icon, nothing happens. I tried it in both Chrome and Safari.
I’m using the Classic theme.
I did a Quick Repair as well as a Javascript repair and same result.
I changed the permissions to file cache/jsLanguage/en_us.js to 775 and that did not work either.
If you go to the above but select “Full Form” the date icon works.
I found the issue. The /modules/Reminders directory was set to 770 and Apache will not allow access to a directory with that setting. Must be 775. Once I changed that (as well as a few other directories that were also 750 (I don’t know why)) the date picker worked again.