1) Update to 5.5 to get more info in logs.
2) Create file logAll.txt in ZennoPoster's folder
3) Open ZennoPoster
4) Wait and reproduce the problem.
5) Run Diagnostic.exe in ZennoPoster's folder and attach report.zip
6) Attach logAll.txt
7) Check if there is logCheckingProcessor.txt file in ZennoPoster folder. If its' there attach it too.
logAll.txt.txt it's not logAll.txt
Please create correct file
Install NET framework 4.5
Disable your antivirus which sent a lot of info to logs
Reinstall ZennoPoster after that
And collect this data again, please