Your project was last saved with a different version of Unity. can some one explain what this means

Your project was last saved with a different version of Unity.

/Volumes/My Passport/unity folder/Wasp2020

The saved project (5.3.3f1) does not match the launched editor (2018.4.2f1).

This may require re-import. Please be aware that opening in an older version is unsupported.

Note that if a build target installation is missing, this may also cause a re-import.

If you proceed, some packages may be updated. For a list of any changes made to your Project’s packages, see the Logs/Packages-Upgrade.log file in your Project folder.

 

It simply means, your project was last saved in Unity 5. Now you try open in Unity 2018, which is few years apart. This means, Unity versions and its API changed a lot since. You will need update your project, to match changes. Unity will try to correct and update you project. But often things may break. That will require manual fixing.

Before you do any of that, make sure you got backup copy of the project.

Alternatively, you may be better of, installing Unity 5, to avoid need of migration to 2018.

 

Ok thanks , I guessed as much
I tried a few of my older projects and had some success , but !
the project are so intricate that finding where to even start to fix them is daunting

 

Is there some reason you need to open them in current versions of Unity? Assuming they were working when you last used them then they should still work if you open them in the version they were made with. Personally, if I wanted to upgrade them that's where I'd start anyway.

 

Assuming you need to target modern Android SDK and NDK versions, those old unity installs are hard coded to look in places that no longer are valid for the newer tooling.

Then there is the need to make sure that all android app updates support x64 and not x86, which might require you to update Unity.

 

I don't really understand how to get and run older version of unity .
also I want to use the new feathers to improve them .

one issue i am having with a large project is the characters animation no longer work and I can't work out how to fix them.
They were blender animations .

 

You can get older versions here: https://unity3d.com/get-unity/download/archive
Here's the installer link for 5.3.3: https://unity3d.com/get-unity/download?thank-you=update&download_nid=28745&os=Win

Though if you want to use the new features, you can upgrade if you want. Just remember to backup first, since any changes made by the upgrade process is irreversible.

 

You really should use the green "Unity Hub" button instead of downloading the installer directly.

 

That's true, but it's not available on 5.3.3 due to it being too old.

 

The /volumes folder implies the OP is on a Mac. If running the latest MacOS the OP needs to move at least to 2017.4.x latest in order to pick up needed fixes due to Apple removing all 32 bit support. Unity 5.x never will get those fixes.

 

These are the sorts of things I was thinking of when I gave feedback that I would expect LTS to be able to continue correctly building games even as the target platforms update @smcclelland

I wouldn't expect Unity 5.3.3 to be actively maintained but now that LTS exists my hope would be that for the lifetime of an LTS support that a platform update doesn't force a Unity version update.

 

This is expecting too much from Apple, I think, who routinely break entire swaths of product functionality under the guise of "progress."

 

Google too does this.

That said, the point of LTS would be to support these changes without being told to update to the latest half baked beta for the fix.

If it sounded like I was asking not to even have to update the minor version number then that was me speaking imprecisely. I would expect a resolution in say:

2018.4.latest+1 (Because its LTS)
2019.4.latest+1 (Because its LTS)
2020.latest ( because it's in development)

It shouldn't be unreasonable for unity to be on top of those changes in a product touted as "long term support"

 

It does fit the description, so I generally agree. I wouldn't be surprised or upset if some major changes do require compromise on the developer side, though. If a vendor breaks something in a new version and Unity relies on it for some target platforms then I don't think it'd be unreasonable for Unity to support it only on those versions where it originally worked. For developers that would potentially then require multiple build machines or similar, which is a pain, but doesn't fundamentally prevent us from shipping.

 

Thanks everyone for your input , I will try to get the older projects working again in the version i'm am currently running .

can anyone help me by writing this script as a C# script I think it's why the animations are not working .



#pragma strict
var eagle : GameObject;
var speed = 0.0;
var fastspeed = 10.0;
var slowspeed = 0.0;
var anim: Animation;
function Start () {
anim = eagle.GetComponent.<Animation>();
}

function Update () {
transform.Translate(0,0,speed*Time.deltaTime);
if (transform.eulerAngles.x > 250){
anim.CrossFade("let"); }
else if (transform.eulerAngles.x > 10 &&transform.eulerAngles.x < 250){
//transform.Translate(0,0,fastspeed*Time.deltaTime);
speed = Mathf.Lerp(speed,fastspeed,Time.deltaTime);
anim.CrossFade("spust");}
else{
speed = Mathf.Lerp(speed,slowspeed,Time.deltaTime);
anim.CrossFade("idle");}

}

 

You should ask that kind of question in the Scripting section.

 

Here it is. You will need to fill in the class name. It's the same as the filename minus the extension.

Code (csharp):

1. using UnityEngine;
2.  
3. public class SCRIPTNAMEGOESHERE : MonoBehaviour
4. {
5.     public GameObject eagle;
6.     public float speed = 0.0;
7.     public float fastspeed = 10.0;
8.     public float slowspeed = 0.0;
9.     public Animation anim;
10.  
11.     void Start()
12.     {
13.         anim = eagle.GetComponent<Animation>();
14.     }
15.  
16.     void Update()
17.     {
18.         transform.Translate(0, 0, speed * Time.deltaTime);
19.         if (transform.eulerAngles.x > 250)
20.         {
21.             anim.CrossFade("let");
22.         }
23.         else if (transform.eulerAngles.x > 10 && transform.eulerAngles.x < 250)
24.         {
25.             speed = Mathf.Lerp(speed, fastspeed, Time.deltaTime);
26.             anim.CrossFade("spust");
27.         }
28.         else
29.         {
30.             speed = Mathf.Lerp(speed, slowspeed, Time.deltaTime);
31.             anim.CrossFade("idle");
32.         }
33.     }
34. }

 

thank you Ryiah

 

I got it to work again and Im very happy with it thanks everyone !