Prepare folder with EPP 5.2 and EAP 5.1 runtimes Go to JBoss runtime detection preference page Check both JBoss AS and Seam detectors Add the folder to runtime detection and search for runtimes Add all runtimes RESULT: Only one Seam runtime is added (check the Seam preferences page) Delete all Seam runtimes Go back to JBoss Tools runtime detection preference page Uncheck the JBoss AS detector Search folder with EAP and EPP Add all runtime. RESULT: Two Seam runtimes are added