Consider buying with a question: Can I run FSLabs in P3Dv4.1?

[WessYin]

Every update to FSX/P3D in the past caused me to spend a lot of time. I would like to stay with P3Dv4.1. The latest copy seems to require v4.2. Is this true?

[Marc Ehnle]

No. 

4.1 is fine, you might miss some features though that will or will not come and require 4.2 (or 4.3 when it‘s out)... it‘s best to be up to date as soon as it‘s clear that new versions run fine. Updating P3D has become quite simple and straight forward. 

[Lefteris Kalamaras]

We fully recommend updating at LEAST the client (as well as Content) to 4.2 - it's a simple upgrade.

The latest version of the 320 is still compatible with 4.1.

The 319 will require 4.2.

[WessYin]

Thank you for the replies. I would like to stick with P3D 4.1 until the summer starts. Just cannot risk losing any of the installed aircrafts and add-ons.