error while save the project

PHPMaker General Discussion (PHPMaker)
1

Hello All,
i have got this error while saving the project
“invalid data in index-incorrect header signature”
and i don’t know what i can do , please help.sohib

2

Is this an upgraded project file from previous version of PHPMaker?

3

https://discourse.hkvstore.com/t/invalid-data-in-index-on-save/576/1