1.1 with bug fixes and added compatibility

Test credentials wrong error – This is because of saop api issue in your sugar instance. You refer this link – https://my.sourcecreativity.com/knowledgebase.php?action=displayarticle&id=2

For all other possibilities you need to check with your administrator the PHP log.

-If you received an empty response from your SugarCRM installation (instead of XML response), so, we think that there is something wrong in your SugarCRM installation or configuration. Please note that the proper functioning of our extension depends on the SugarCRM response, installation and configuration.

Unfortunately, we do not provide the support for SugarCRM. Please see with your administrator or web hoster to fix this issue.

Here is the solution for Test Credential or login failure issues.

This is known issue in sugar crm itself, not by the plugin.

Try to access yoursugarcrm.com/soap.php?wsdl. If the page triggers error as follows

This page contains the following errors:

error on line 1215 at column 1: Extra content at the end of the document

Then you have to comment line no 51 in file sugar_root/soap.php

error_reporting(E_ALL ^ E_NOTICE); as
//error_reporting(E_ALL ^ E_NOTICE);

Now everything will work fine.