<p>@mark_m said:</p> <blockquote>Any gotchas that we know about?</blockquote> <p> Nothing I can think of. Most Add-ons are now included by default, but plugins in the external folder won't cause any issue since Isadora 4 checks the internal version numbers. We have been running V3 and V4 side by side for months, and I haven't had any issue. Of course backup before upgrading, since file format will be updated and won't be openable in V3 if you need to go back for any reason.</p>

Of course backup before upgrading, since file format will be updated and won't be openable in V3 if you need to go back for any reason.

Just chiming in because, while it's technically correct, the wording of this warning makes the process sound much scarier than it actually is. The feature that's been in place since the launch of Isadora 3, which prompts you to create and update a copy of a file that was made in an older version of Isadora (leaving the original file untouched), is still in place, so it's impossible to accidentally update a file to the Isadora 4 file format by misclicking once or by opening an older file using Isadora 4 without backing it up first. There is no way to disable this safety net feature, and the default choice in the dialog is to create a copy (leaving the original file unmodified). 

TLDR: Isadora 4 is designed to preserve your original file and work with a copy instead so that you don't have to think or worry about making a backup yourself.

Best wishes,

Woland

Any gotchas that we know about?

 Nothing I can think of. Most Add-ons are now included by default, but plugins in the external folder won't cause any issue since Isadora 4 checks the internal version numbers. We have been running V3 and V4 side by side for months, and I haven't had any issue. Of course backup before upgrading, since file format will be updated and won't be openable in V3 if you need to go back for any reason.

thanks, sorry i didn't see that info

No worries, it's very new info. Also, asking these questions and giving us the opportunity to answer them is helpful for others who may be wondering the same thing, so there's no need to apologize. Thank you for asking :)

thanks, sorry i didn't see that info

so you recommend running both, rather than replacing?

You may certainly uninstall Isadora 3 if you'd like, but installing Isadora 4 will not automatically replace Isadora 3. This is not because we recommend running both, it's because we know that many of our users (myself included) when re-mounting a show, prefer to run the show file in the same version of Isadora with which it was created. This is the reason we were careful to make sure it was easy for our users to do that if they wished, and why you'll see us specifically mentioning in various places that Isadora 3 and Isadora 4 can coexist without issue on the same computer. This is also why we ensured that Isadora 4 Perpetual Licenses, Rentals, and Subscriptions all allow the user to work with both Isadora 3 and Isadora 4.

@notdoc said:

Will Troika continue to support Izzy 3 as a distinct version, or will all future updates/grades only apply to 4?

As outlined in the updated TroikaTronix Support Policy: 

Our team provides technical support for Isadora 3.2.6 and later. However, TroikaTronix is no longer actively developing Isadora 3 and earlier, and future updates will be available for Isadora 4 only.

which can be installed on the same computer as Isadora 3

 ...so you recommend running both, rather than replacing? Will Troika continue to support Izzy 3 as a distinct version, or will all future updates/grades only apply to 4?

(sorry if this is a dumb question, but I'm not clear on this...)