8.2的门户可以登录，但客户端打开报错

如题，出现如下报错界面：

点开“高级”，出现如下内容，救命：

暂无具体处理建议
----------------------------
com.kingdee.eas.client.startup.exception.EASClientException: 保存eas.jnlp文件出错
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createEasJnlpWithUTF8(CreateJNLPResource.java:270)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createLocalJNLPResource(CreateJNLPResource.java:166)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createLocalJNLPResource(CreateJNLPResource.java:366)
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.loadLocalCacheFile(CacheStateImpl.java:157)
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.(CacheStateImpl.java:66)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createRawCacheState(CacheStateFactory.java:66)
at com.kingdee.eas.client.startup.update.check.FullDLCacheStateImplWrapper.(FullDLCacheStateImplWrapper.java:23)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createFullDLCacheState(CacheStateFactory.java:54)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createCurrentCacheState(CacheStateFactory.java:21)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.(EasClientExplicitUpdater.java:41)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.getInstance(EasClientExplicitUpdater.java:37)
at com.kingdee.eas.client.startup.ClientUpdater.update(ClientUpdater.java:44)
at com.kingdee.eas.client.startup.EASClientStarter.update(EASClientStarter.java:58)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.checkAndUpdate(BodyguardDlg.java:279)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.newTask(BodyguardDlg.java:132)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.doTask(BodyguardDlg.java:78)
at com.kingdee.eas.tools.bodyguard.extcomponent.FrmRunTask$3.run(FrmRunTask.java:234)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:39)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:35)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:196)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:179)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.FileNotFoundException: C:\Kingdeeclient\eas\client\eas.jnlp (拒绝访问。)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:194)
at java.io.FileOutputStream.(FileOutputStream.java:145)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createEasJnlpWithUTF8(CreateJNLPResource.java:248)
... 22 more
java.io.FileNotFoundException: C:\Kingdeeclient\eas\client\eas.jnlp (拒绝访问。)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:194)
at java.io.FileOutputStream.(FileOutputStream.java:145)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createEasJnlpWithUTF8(CreateJNLPResource.java:248)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createLocalJNLPResource(CreateJNLPResource.java:166)
at com.kingdee.eas.client.startup.update.check.CreateJNLPResource.createLocalJNLPResource(CreateJNLPResource.java:366)
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.loadLocalCacheFile(CacheStateImpl.java:157)
at com.kingdee.eas.client.startup.update.check.CacheStateImpl.(CacheStateImpl.java:66)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createRawCacheState(CacheStateFactory.java:66)
at com.kingdee.eas.client.startup.update.check.FullDLCacheStateImplWrapper.(FullDLCacheStateImplWrapper.java:23)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createFullDLCacheState(CacheStateFactory.java:54)
at com.kingdee.eas.client.startup.update.check.CacheStateFactory.createCurrentCacheState(CacheStateFactory.java:21)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.(EasClientExplicitUpdater.java:41)
at com.kingdee.eas.client.startup.update.EasClientExplicitUpdater.getInstance(EasClientExplicitUpdater.java:37)
at com.kingdee.eas.client.startup.ClientUpdater.update(ClientUpdater.java:44)
at com.kingdee.eas.client.startup.EASClientStarter.update(EASClientStarter.java:58)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.checkAndUpdate(BodyguardDlg.java:279)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.newTask(BodyguardDlg.java:132)
at com.kingdee.eas.tools.bodyguard.BodyguardDlg.doTask(BodyguardDlg.java:78)
at com.kingdee.eas.tools.bodyguard.extcomponent.FrmRunTask$3.run(FrmRunTask.java:234)
at foxtrot.AbstractWorkerThread$1.run(AbstractWorkerThread.java:39)
at java.security.AccessController.doPrivileged(Native Method)
at foxtrot.AbstractWorkerThread.runTask(AbstractWorkerThread.java:35)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:196)
at foxtrot.workers.SingleWorkerThread.run(SingleWorkerThread.java:179)
at java.lang.Thread.run(Thread.java:662)