Plugin for JIRA throws errors in 7.4.1 but runs well in 7.4.2

[Arthur]

I want to port my plugin for JIRA to make it compatible with JIRA 7.4.x

When I change the version of JIRA to 7.4.1 in pom.xml I get the following compilation errors:

• package com.atlassian.crowd.embedded.api does not exist

• package org.apache.velocity does not exist

• package org.apache.velocity.app does not exist

• package org.apache.commons.codec.binary does not exist

• class file for com.atlassian.crowd.embedded.api.Group not found 

• class file for com.atlassian.plugin.web.Condition not found

When I set the version to 7.4.2, I can compile the plugin, and also run it in JIRA without problems.

Here is a paste with properties and dependencies of my pom.xml.

What can we do to make the plugin also compatible with JIRA 7.4.1 ?

Thanks in advance :)

[Arthur · Accepted solution]

I solved the problem but I cannot describe my answer here, it gets rejected by atlassians automatic answer validation. :/ 

Thanks atlassian!

I also posted the question and my answer here