I want to convert DICOM to NIIfti using dcm2niigui, where I am supposed to drag and drop all the required DICOM imageS needed to be converted. 

I followed these steps:

1. Downloaded MRIcron ((2-September-2019 (v1.0.20190902)), MRIcron_windows.zip
After few minutes,
2.click on the downloaded .zip file to extract the items.
after extracting,
3. Can see a folder named'MRIcron'
4. Double click on it.
5. can see: a folder named'Resources' and another .exe file named 'mricron.exe'6. 
6. If I click on 'mricron.exe'6- I am geeting an error saying' !  Cannot execute "C:\Users\.......\AppData\Local\Temp\Rar$EXa4796.38558\MRIcron\mricron.exe"
7. I even cannot see 'dcm2niigui.exe' application inside 'resource' folder instead I can see 'dcm2nii.exe'.
8. If I click on this application, I am again getting same type of error message as above.

Please help me resolving it.

If your version of Windows does not allow you to drag and drop folders, press the "Select Folder To Convert" button at the bottom left of the window.