"Trial expires in x days"
- or -
"Your 30 day trial of gINT Professional has EXPIRED!"
When gINT installs it defaults to gINT Professional. If your license is for either Logs or Professional Plus gINT will start a 30-day trial of Professional. At the end of the 30 day trial you will be locked out of gINT.
To avoid this situation, during the installation, select gINT Logs or gINT Professional Plus, as appropriate.
For general licensing troubleshooting: http://communities.bentley.com/products/licensing/w/licensing__wiki/troubleshooting-product-activation-for-xm-and-higher.aspx