[#4610] - Error on step 3 while creating EXCEL file: ShadowFileInputToDelimitedOutput

Getting the following errors while creating a new EXCEL file (on step 3).

java.lang.NoClassDefFoundError: aci_project1/shadowfileinputtodelimitedoutput_0_1/ShadowFileInputToDelimitedOutput
Caused by: java.lang.ClassNotFoundException: aci_project1.shadowfileinputtodelimitedoutput_0_1.ShadowFileInputToDelimitedOutput
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: aci_project1.shadowfileinputtodelimitedoutput_0_1.ShadowFileInputToDelimitedOutput. Program will exit.
Exception in thread "main"

Preview error. Some settings must be changed.
Note: Preview errors are generally due to a wrong encoding setting.
org.talend.designer.runprocess.shadow.ShadowFilePreview.preview(Unknown Source)
org.talend.repository.ui.utils.ShadowProcessHelper.getCsvArray(Unknown Source)
org.talend.repository.ui.wizards.metadata.connection.files.excel.ExcelFileStep2Form$PreviewProcessor.nonUIProcessInThread(Unknown Source)
org.talend.commons.ui.swt.thread.SWTUIThreadProcessor$1.run(Unknown Source)