New Composer programming a 2.6 system

[NYInstallers]

Just took over a new client with a system roughly on 2.6.  I connected using a new version of composer and it started to throw all kinds of errors.  

is there a way to manage this system keeping It on the existing OS with the new version of composer 3.1? 

if so, are those errors ignorable? Or will I mess something up by making changes? How do I safely make changes and backups of the system?

thanks 

[msgreenf]

no, you need to use the same version of composer or upgrade. there is KB article with legacy versions of composer.

[NYInstallers]

Thank you.  I will take a look

[Cyknight]

To be clear - OS3 up you have one composer with 'packages' for each version (it'll download on demand as needed) - pre 3.0 you'll need a (near) matching version (ie as an installer, you should have 2.10.6, 2.9.1, 2.6 and probably 2.5.3 installed - those will catch 99% of pre 3.0 systems.

[NYInstallers]

Thanks for all the help.  I found it. 

[Amr]

On 12/23/2022 at 2:59 PM, NYInstallers said:

Thanks for all the help.  I found it. 

Actually if the system can take it try to get them to 2.9.1 or better 2.10.6 if they are sticking with OS2