Thanks Samuel, so I can confirm that the code we used to have to accept both v3 and v4 bundles has a regression in the last GUI release. The next release was going to be tomorrow, but we'll work to get this fix up before we do that release.
If you need something today, the best thing is to move to the v4 format, and eventually you'll want to do that anyway. However, it was not intended to break all the v3 ones at this time so we'll get an update out asap.
Thanks Samuel, so I can confirm that the code we used to have to accept both v3 and v4 bundles has a regression in the last GUI release. The next release was going to be tomorrow, but we'll work to get this fix up before we do that release.
If you need something today, the best thing is to move to the v4 format, and eventually you'll want to do that anyway. However, it was not intended to break all the v3 ones at this time so we'll get an update out asap.