[Dave]

Every

PHP Code:

=& datamanager_init 


has to be changed to

PHP Code:

= datamanager_init 


in all files.

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In /includes/class_dm_pt_issuenote.php

PHP Code:

function verify_ipaddress(&$ipaddress) 


Remove the ampersand.

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In /packages/vbproejcttools/attach/issue.php

PHP Code:

public function pre_delete($list) 


to

PHP Code:

public function pre_delete($list, $checkperms = true) 


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I'm not sure about the fatal error though, it's not clear to me where it's called from.