Hi julcar
If you are going to modify an existing .tcz , you should delete the .md5.txt file if you don't want the .tcz overwritten during
an update.
If you use Apps->Load App Locally the extenstion will load regardless of whether the md5.txt exists or is correct.
If you use Apps->Cloud(Remote)->Browse to load the extension you have 3 possible outcomes:
1. The .md5.txt file is correct and the extension loads.
2. The .md5.txt file does not exist, the repository is checked for an .md5.txt file and fetched if it exists. If the MD5
matches the extension, it loads. Otherwise it fails to load.
3. The .md5.txt file does not match the extension, so it fails to load.