Upgrade 2.2 -> 2.5.1 - 'Ajax failed' error on the Database configuration screen

[jpfayolle]

Hello,

Is there any documentation for upgrade? I did not find anything except an old post on the forum saying to install the new version on the old one, which I believe is incorrect as all customisations would be lost.

Here is what I did:
. backup the current version from www\espo directory
. delete this directory
. download EspoCRM-2.5.1.zip and extract it in www\espo directory
. launch espo Ok, but I have to start again all the install procedure
. in the 'Database configuration' screen, I get an 'Ajax failed' error and ERROR: Json::decode(): [] [] in the log.
I believe there is a problem of connectivity with mysql as it takes some time each time I intend to test the connection. I can access the database with PhPMyadmin

Finally, I did suppress the new release and reinstalled the backup files and everything is Ok with release 2.2.

I am used to install/upgrade J2EE .war files with Tomcat, but I don't know PHP.
Is there some config files from the previous version I could copy into the new version in order to avoid this problem ?

Regards.

[yuri]

Hi

This should be a problem with file permissions. Not sure.

The default config is stored in application\Espo\Core\defaults\config.php
Maybe rebuild is needed. You can do it manually by running command in shell: php rebuild.php

There is Upgrade menu item in a Administation page. You can download upgrade packages from http://sourceforge.net/projects/espocrm/

We should show this info on the upgrade page.

[jpfayolle]

Ok. Upgrades are here: http://sourceforge.net/projects/espocrm/files/Upgrades/

I did not find this directory at first and started the upgrade with the full install EspoCRM-2.5.1.zip

To be noted that in the Administration -> Upgrade,
. message is "Select uprade package" --> should be "Select upgrade"
. when trying to upgrade with the full install, message error "It's not an uprgade package." --> should be "... not an upgrade ..."

Then I tried to upgrade directly to 2.5.1 because I have not seen that upgrade have to be done incrementally: 2.2 -> 2.3 -> 2.4, etc..
Then I proceed so and it worked.

Thanks.