TypeError: '>' not supported between instances of 'float' and 'NoneType'

[mellamosummer]

Hello,

I am trying to run wLogDate to infer a time tree with calibration points given in backward time.

Here is the command I am running: wLogDate/launch_wLogDate.py -i wlog_tree_rooted.treefile -b -t wLogDate_calib_rootGer.txt -o dated_tree.txt

I keep encountering an error when I try to run wLogDate. Here is the error:

INFO:main:Launching wLogDate version 1.0.4
INFO:main:wLogDate was called as follow: wLogDate/launch_wLogDate.py -i wlog_tree_rooted.treefile -b -t wLogDate_calib_rootGer.txt -o dated_tree.txt
Traceback (most recent call last):
File "wLogDate/launch_wLogDate.py", line 98, in
main()
File "wLogDate/launch_wLogDate.py", line 90, in main
node.edge_length = max(node.edge_length,zero_len)
TypeError: '>' not supported between instances of 'float' and 'NoneType'

I'm happy to share my input files if that would help to troubleshoot.