On Fedora 25, Areca fails to start, when the OS uses Wayland. Using X-Server, Areca works as expected.
Here is the Error produced by Areca 7.4.9
Version: 1.8.0_111
openjdk version "1.8.0_111"
OpenJDK Runtime Environment (build 1.8.0_111-b16)
OpenJDK 64-Bit Server VM (build 25.111-b16, mixed mode)
No protocol specified
org.eclipse.swt.SWTError: No more handles [gtk_init_check() failed]
at org.eclipse.swt.SWT.error(Unknown Source)
at org.eclipse.swt.widgets.Display.createDisplay(Unknown Source)
at org.eclipse.swt.widgets.Display.create(Unknown Source)
at org.eclipse.swt.graphics.Device.<init>(Unknown Source)
at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
at org.eclipse.swt.widgets.Display.<init>(Unknown Source)
at org.eclipse.swt.widgets.Display.getDefault(Unknown Source)
at org.eclipse.swt.widgets.Display$1.run(Unknown Source)
at org.eclipse.swt.graphics.Device.getDevice(Unknown Source)
at org.eclipse.swt.graphics.Resource.<init>(Unknown Source)
at org.eclipse.swt.graphics.Image.<init>(Unknown Source)
at com.application.areca.launcher.gui.common.ArecaImages.loadImage(ArecaImages.java:107)
at com.application.areca.launcher.gui.common.ArecaImages.<clinit>(ArecaImages.java:43)
at com.application.areca.launcher.gui.Application.<clinit>(Application.java:142)
at com.application.areca.launcher.gui.Launcher.launchImpl(Launcher.java:141)
at com.myJava.system.AbstractLauncher.launch(AbstractLauncher.java:47)
at com.application.areca.launcher.gui.Launcher.main(Launcher.java:48)</clinit></clinit></init></init></init></init></init>