How to reproduce:
1. Create and open a new project
2. Install Profile Analyzer package from the Package Manager
3. Open Profiler and Profile Analyzer windows from Windows > Analysis. Ensure that the CPU Module is enabled with the Timeline selected.
4. Enter Play Mode and make sure that Profiler is recording data
5. Press "Close Profiler Window" in the Profile Analyzer window
6. Press "Open Profiler Window" in the Profile Analyzer window
7. Press "Pull Data" in the Profile Analyzer window
8. Pause Play Mode

Expected results: no errors are thrown
Actual results: NullReferenceExcpetion and ArgumentException errors are thrown

Reproducible with: 2019.3.14f1, 2020.1.0b9, 2020.1.0b10, 2020.2.0a4, 2020.2.0a12
Not reproducible with: 2018.4.23f1, 2019.3.13f1, 2020.1.0b8, 2020.2.0a3

Notes:
-This doesn't always reproduce on the first try but after the errors are thrown once, on subsequent attempts this issue is consistent
-This issue seems to come from Profiler and not Profile Analyzer since reproduction isn't dependant on Profile Analyzer's version but rather on Editor's version