How to solve Cydia Crash problem during ‘Loading Data’ Screen

Use iFile and directly delete files from iPhone but it is safer to first backup those files you are deleting and then delete them if in case something goes wrong so you can reload those files. The files that have to be deleted is in the path var/lib/apt/lists. There you have to delete all files except the ‘partial’ folder. I deleted approximately 140 files as I had installed all the repositories. After deleting all the files simply reboot your iPhone and start cydia. It should work fine and no software’s/packages shall be deleted or lost.
If you don't have an ifile then use your Diskaid or SSH