External JARs in Build Path disappear on refresh

For a project I want to make use of the Google Drive API. This means I have to import multiple .jar files in Eclipse to use in the Java actions. When adding the .jar files through the configure Build Path setting in Eclipse, they are added and cause no errors. However, when I refresh or deploy my application in Eclipse, the jar files are removed from the project and will fail to compile. Anyone else experienced this before and knows how to fix this? Thanks in advance :)
1 answers

Don't use the eclipse management of jars, instead put the jars in the userlib directory of your Mendix project and the modeler will maintain the eclipse project settings. Deploy for eclipse, refresh in eclipse.