java - PyCharm startup failure -


my pycharm fails startup after reboot of system updates, disappears after showing splash screen.

when tried start command line, shows following error:

c:\program files (x86)\jetbrains\pycharm community edition 4.5.3\bin>pycharm.bat java hotspot(tm) server vm warning: ignoring option maxpermsize=250m; support removed in 8.0  start failed: internal error. please report https://youtrack.jetbrains.com  java.lang.reflect.invocationtargetexception         @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)         @ sun.reflect.nativemethodaccessorimpl.invoke(nativemethodaccessorimpl.java:62)         @ sun.reflect.delegatingmethodaccessorimpl.invoke(delegatingmethodaccessorimpl.java:43)         @ java.lang.reflect.method.invoke(method.java:497)         @ com.intellij.ide.bootstrap.main(bootstrap.java:39)         @ com.intellij.idea.main.main(main.java:83) caused by: java.lang.exceptionininitializererror         @ com.intellij.util.ui.uiutil.isunderdarcula(uiutil.java:1295)         @ com.intellij.ui.jbcolor.<clinit>(jbcolor.java:34)         @ com.intellij.util.ui.uiutil.<clinit>(uiutil.java:232)         @ com.intellij.ide.plugins.pluginmanager.start(pluginmanager.java:71)         ... 6 more caused by: java.lang.illegalargumentexception: 36 incompatible text-specific lcd contrast key         @ java.awt.renderinghints.put(renderinghints.java:1075)         @ sun.awt.windows.wdesktopproperties.getdesktopaahints(wdesktopproperties.java:312)         @ sun.awt.windows.wtoolkit.getdesktopaahints(wtoolkit.java:1035)         @ sun.awt.suntoolkit.getdesktopfonthints(suntoolkit.java:1848)         @ sun.awt.windows.wdesktopproperties.getproperties(wdesktopproperties.java:249)         @ sun.awt.windows.wtoolkit.lazilyinitwprops(wtoolkit.java:911)         @ sun.awt.windows.wtoolkit.lazilyloaddesktopproperty(wtoolkit.java:900)         @ java.awt.toolkit.getdesktopproperty(toolkit.java:1803)         @ javax.swing.uimanager.<clinit>(uimanager.java:380)         ... 10 more   also, ui exception occurred on attempt show above message: java.lang.noclassdeffounderror: not initialize class javax.swing.uimanager         @ javax.swing.text.jtextcomponent.updateui(jtextcomponent.java:338)         @ javax.swing.text.jtextcomponent.<init>(jtextcomponent.java:312)         @ javax.swing.jeditorpane.<init>(jeditorpane.java:199)         @ javax.swing.jtextpane.<init>(jtextpane.java:90)         @ com.intellij.idea.main.showmessage(main.java:231)         @ com.intellij.idea.main.showmessage(main.java:217)         @ com.intellij.idea.main.main(main.java:86)

noticed says "incompatible text-specific lcd contrast key", started trying various display settings in pc, , found if turn off "cleartype", able startup successfully.

how can fix without turning off cleartype?

ok, found out reason. there setting in registry might read pycharm, , causes crash:

hkey_current_user\control panel\desktop\fontsmoothinggamma

i manually added key while ago, trying improve cleartype text displaying, referring this link.

after deleting key, pycharm can started cleartype enabled.


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