For issues you find with the Switch and Console releases, please follow this link and give as much detail as possible. This is the speediest way to get info to Pipeworks and get a hotfix in the works.
1.4 will bring many changes to the PC version. We strongly advise making plans to back up your worlds and players prior to updating your game. More details here.
Begin your search for Journey's End information here and here. Please report bugs and issues for Journey's End here.
For issues you find with the Mobile 1.4 update, please follow this link and give as much detail as possible. This is the speediest way to get info to DR Studios to look at your issue. Also, some troubleshooting hints here.
Since the author hasn't been seen in quite a while and the links seem to no longer work, I'm going to lock this as abandoned. Please be aware that 'alternate' links to this are not necessarily valid or safe.
There are other inventory editor tools on this forum, perhaps check one of them out.
@Shoot, if you return and want to update this with valid download links, please send me a PM (or PM any staff member).