Hi Kevin,

I get the following error on submitting the solution:

Fatal error: Uncaught ValueError: bcsub(): Argument #1 ($num1) is not well-formed in /home/theathen/public_html/module/service/TaskService.php:267 Stack trace:

0 /home/theathen/public_html/module/service/TaskService.php(267): bcsub()

1 /home/theathen/publichtml/module/service/TaskService.php(201): module\service\TaskService->verifyFloatAnswer3()

2 /home/theathen/public_html/module/service/TaskService.php(313): module\service\TaskService->verifyAnswer()

3 /home/theathen/public_html/module/service/TaskService.php(297): module\service\TaskService->processSolutionDetermineState()

4 /home/theathen/public_html/ctl/task/Attempt.php(60): module\service\TaskService->processSolution()

5 /home/theathen/public_html/index.php(80): include('/home/theathen/...')

6 /home/theathen/public_html/index.php(15): addfile()

7 /home/theathen/public_html/index.php(134): main()

8 {main} thrown in /home/theathen/public_html/module/service/TaskService.php on line 267

There are cases when the observer is "in the tree". (the distance between the observer and the center of the tree is less than the radius of the tree). I tried giving 360 or 0 degress as answer in such cases but the neither of them changes the error message above.

Thanks!

Ok, I can confirm that it is fixed now. Thank you!