Urgent : SVNRepository methods are not reenterable

ERROR - Problem processing revisions from repo svn://******/svn/repos/******/
due to class java.lang.Error - SVNRepository methods are not reenterable
java.lang.Error: SVNRepository methods are not reenterable
at org.tmatesoft.svn.core.io.SVNRepository.lock(SVNRepository.java:1846)

at org.tmatesoft.svn.core.io.SVNRepository.lock(SVNRepository.java:1837)

at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnecti
on(SVNRepositoryImpl.java:959)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.setLocation(
SVNRepositoryImpl.java:93)
at org.tmatesoft.svn.core.wc.DefaultSVNRepositoryPool.createRepository(D
efaultSVNRepositoryPool.java:196)
at org.tmatesoft.svn.core.wc.SVNClientManager.createRepository(SVNClient
Manager.java:242)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:231)
at org.tmatesoft.svn.core.wc.SVNBasicClient.getLocations(SVNBasicClient.
java:459)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:418)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:382)
at org.tmatesoft.svn.core.wc.SVNWCClient.doGetProperty(SVNWCClient.java:
741)
at org.tmatesoft.svn.core.javahl.SVNClientImpl.propertyGet(SVNClientImpl
.java:945)
at org.tigris.subversion.javahl.SVNClient.propertyGet(SVNClient.java:278
)
at com.cenqua.fisheye.svn.SvnThrottledClient.propertyGet(SvnThrottledCli
ent.java:146)
at com.cenqua.fisheye.svn.SvnRepositoryTester.pingAndValidateAccess(SvnR
epositoryTester.java:122)
at com.cenqua.fisheye.svn.SvnRepositoryScanner.validateAccess(SvnReposit
oryScanner.java:242)
at com.cenqua.fisheye.rep.RepositoryScanner.slurpRepository(RepositorySc
anner.java:330)
at com.cenqua.fisheye.rep.RepositoryScanner.slurp(RepositoryScanner.java
:259)
at com.cenqua.fisheye.rep.RepositoryScanner.ping(RepositoryScanner.java:
190)
at com.cenqua.fisheye.svn.SvnRepositoryEngine.doSlurp(SvnRepositoryEngin
e.java:105)
at com.cenqua.fisheye.rep.RepositoryHandle.pingEngine(RepositoryHandle.j
ava:315)
at com.cenqua.fisheye.rep.RepositoryHandle.access$000(RepositoryHandle.j
ava:30)
at com.cenqua.fisheye.rep.RepositoryHandle$NormalPinger.run(RepositoryHa
ndle.java:61)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)
ERROR - Repository scanner paused.
INFO - Repository svn://*******/svn/repos/mpg/. resuming from pause
ERROR - Problem processing revisions from repo svn://*******/svn/repos/mpg/. du
e to class java.lang.Error - SVNRepository methods are not reenterable
java.lang.Error: SVNRepository methods are not reenterable
at org.tmatesoft.svn.core.io.SVNRepository.lock(SVNRepository.java:1846)

at org.tmatesoft.svn.core.io.SVNRepository.lock(SVNRepository.java:1837)

at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.openConnecti
on(SVNRepositoryImpl.java:959)
at org.tmatesoft.svn.core.internal.io.svn.SVNRepositoryImpl.setLocation(
SVNRepositoryImpl.java:93)
at org.tmatesoft.svn.core.wc.DefaultSVNRepositoryPool.createRepository(D
efaultSVNRepositoryPool.java:196)
at org.tmatesoft.svn.core.wc.SVNClientManager.createRepository(SVNClient
Manager.java:242)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:231)
at org.tmatesoft.svn.core.wc.SVNBasicClient.getLocations(SVNBasicClient.
java:459)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:418)
at org.tmatesoft.svn.core.wc.SVNBasicClient.createRepository(SVNBasicCli
ent.java:382)
at org.tmatesoft.svn.core.wc.SVNWCClient.doGetProperty(SVNWCClient.java:
741)
at org.tmatesoft.svn.core.javahl.SVNClientImpl.propertyGet(SVNClientImpl
.java:945)
at org.tigris.subversion.javahl.SVNClient.propertyGet(SVNClient.java:278
)
at com.cenqua.fisheye.svn.SvnThrottledClient.propertyGet(SvnThrottledCli
ent.java:146)
at com.cenqua.fisheye.svn.SvnRepositoryTester.pingAndValidateAccess(SvnR
epositoryTester.java:122)
at com.cenqua.fisheye.svn.SvnRepositoryScanner.validateAccess(SvnReposit
oryScanner.java:242)
at com.cenqua.fisheye.rep.RepositoryScanner.slurpRepository(RepositorySc
anner.java:330)
at com.cenqua.fisheye.rep.RepositoryScanner.slurp(RepositoryScanner.java
:259)
at com.cenqua.fisheye.rep.RepositoryScanner.ping(RepositoryScanner.java:
190)
at com.cenqua.fisheye.svn.SvnRepositoryEngine.doSlurp(SvnRepositoryEngin
e.java:105)
at com.cenqua.fisheye.rep.RepositoryHandle.pingEngine(RepositoryHandle.j
ava:315)
at com.cenqua.fisheye.rep.RepositoryHandle.access$000(RepositoryHandle.j
ava:30)
at com.cenqua.fisheye.rep.RepositoryHandle$NormalPinger.run(RepositoryHa
ndle.java:61)
at java.util.TimerThread.mainLoop(Unknown Source)
at java.util.TimerThread.run(Unknown Source)