id summary reporter owner description type status priority milestone component version resolution keywords cc 12971 Setting WMS Simultaneous connections to 1 makes JOSM unusable josm@… wiktorn "==== What steps will reproduce the problem? 1. Set preference WMS/TMS -> Settings -> WMS settings -> Simultaneous connections = ""1"" (cache.jcs.max_threads = 1) 2. Restart 3. Try to access Preferences (F12) or try to open download map data window. ==== What is the expected result? Get access to preferences window, or download form OSM window. ==== What happens instead? Exception or silent error eg. ""Could not initialize class org.openstreetmap.josm.data.cache.JCSCachedTileLoaderJob"" and nothing happens, or JOSM opens empty unusable download data from OSM window. I have also reproduced this error with default settings. It taked me a while to find which changed option caused this behaviour. Cannot access preferences window to change ""Simultaneous connections"" to something greater than 1. Beginner may not know what caused this, and may be forced to deleting his preferences. Finally, I have edited preferences.xml manually. Setting cache.jcs.max_threads to value greater than 1 resolved problem. I had temporarily very limited internet bandwidth 64 kbps/s after excessing provider quota, and I tried setting ""Simultaneous connections"" to ""1"" to not overload internet connection. Thank you for your work on JOSM. ==== Please provide any additional information below. Attach a screenshot if possible. {{{ URL:http://josm.openstreetmap.de/svn/trunk Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b Last:Changed Date: 2016-06-04 17:28:58 +0200 (Sat, 04 Jun 2016) Build-Date:2016-06-04 15:31:27 Revision:10327 Relative:URL: ^/trunk Identification: JOSM/1.5 (10327 pl) Windows 8.1 64-Bit Memory Usage: 485 MB / 910 MB (415 MB allocated, but free) Java version: 1.8.0_91-b15, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM Last errors/warnings: - E: java.net.SocketTimeoutException: Read timed out - E: java.lang.ExceptionInInitializerError. Przyczyna: java.lang.IllegalArgumentException java.lang.ExceptionInInitializerError at org.openstreetmap.josm.gui.preferences.imagery.WMSSettingsPanel.(WMSSettingsPanel.java:45) at org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference.(ImageryPreference.java:82) at org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference.(ImageryPreference.java:76) at org.openstreetmap.josm.gui.preferences.imagery.ImageryPreference$Factory.createPreferenceSetting(ImageryPreference.java:91) at org.openstreetmap.josm.gui.preferences.PreferenceTabbedPane.buildGui(PreferenceTabbedPane.java:473) at org.openstreetmap.josm.gui.preferences.PreferenceDialog.build(PreferenceDialog.java:81) at org.openstreetmap.josm.gui.preferences.PreferenceDialog.(PreferenceDialog.java:48) at org.openstreetmap.josm.actions.PreferencesAction.run(PreferencesAction.java:106) at org.openstreetmap.josm.actions.PreferencesAction.actionPerformed(PreferencesAction.java:101) at javax.swing.SwingUtilities.notifyAction(Unknown Source) at javax.swing.JComponent.processKeyBinding(Unknown Source) at javax.swing.KeyboardManager.fireBinding(Unknown Source) at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source) at javax.swing.JComponent.processKeyBindingsForAllComponents(Unknown Source) at javax.swing.JComponent.processKeyBindings(Unknown Source) at javax.swing.JComponent.processKeyEvent(Unknown Source) at java.awt.Component.processEvent(Unknown Source) at java.awt.Container.processEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source) at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source) at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source) at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source) at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source) at java.awt.Component.dispatchEventImpl(Unknown Source) at java.awt.Container.dispatchEventImpl(Unknown Source) at java.awt.Window.dispatchEventImpl(Unknown Source) at java.awt.Component.dispatchEvent(Unknown Source) at java.awt.EventQueue.dispatchEventImpl(Unknown Source) at java.awt.EventQueue.access$500(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.awt.EventQueue$3.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.awt.EventQueue$4.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source) at java.awt.EventQueue.dispatchEvent(Unknown Source) at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source) at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.pumpEvents(Unknown Source) at java.awt.EventDispatchThread.run(Unknown Source) Caused by: java.lang.IllegalArgumentException at java.util.concurrent.ThreadPoolExecutor.(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.(Unknown Source) at org.openstreetmap.josm.data.cache.JCSCachedTileLoaderJob.(JCSCachedTileLoaderJob.java:73) ... 48 more }}} " defect closed minor 16.06 Core imagery tested fixed template_report max_threads preferences imagery JCSCachedTileLoaderJob