The link below has information on the latest version of State Designer. This version changes the package structure so ensure you have first removed the Packages/com.opsive.graphdesigner and Packages/com.opsive.statedesigner directories before importing the update.
opsive.com
State Designer 1.2 Released - Opsive
The latest version of State Designer is making its way to the Opsive Store and the Asset Store. This release changes the file structure so . . .
opsive.com