It seems you were using a bad link to the game.
This link works for me: http://www.kongregate.com/games/RevelBase/crafting-idle-clicker
Please contact someone from the Kong staff, when this brings up this error.
This is most likely just a visual problem. The min/max marker change immediately when you rolled your reward to show the min/max of a potential improved roll. The same applies for the chances of course. You should be able to see this by somehow remembering the positions before the roll (e.g. make a screenshot or use your mouse to point on the old min marker).
We will probably add an animation of this one day or show the old positions as well.
Sorry for all the troubles during the last 2 weeks. I needed to do some changes to the whole load/save system, which caused plenty of problems, including this one. Everything seemed to work fine in the testing environment, but there were many different variables in the live environment that caused some special unhandled conditions. As I recognized this, I manually "shut down" the server for a few hours to assure nobody can override their savegame with a new one.
In the meantime all special conditions should be handled and everything should work as expected again.
 "Crafting Idle Clicker"){kind=icon}
It seems you were using a bad link to the game. This link works for me: http://www.kongregate.com/games/RevelBase/crafting-idle-clicker Please contact someone from the Kong staff, when this brings up this error.