Thanks for your rapid response Dimitri. In my first email I mis-quoted the mime-type property value I had set, but, as you pointed out, the correct value didn't effect the checksum behavior.
Here is the complete text of the method used to commit a new revision: private long commitNewRevisionInner(String filePath, String nodePath, String comment) throws Exception { ISVNEditor editor; SVNCommitInfo commitInfo = null; if (!initialize()) { throw new Exception("Not initialized."); } editor = repository.getCommitEditor(comment, null); editor.openRoot(-1); editor.openDir(initialWcDir, -1); editor.openFile(initialWcDir + nodePath, -1); editor.applyTextDelta(initialWcDir + nodePath, null); FileInputStream fis = new FileInputStream(filePath); String checksum = null; try { SVNDeltaGenerator deltaGenerator = new SVNDeltaGenerator(200000); checksum = deltaGenerator.sendDelta(initialWcDir + nodePath, fis, editor, true); editor.closeFile(initialWcDir + nodePath, checksum); editor.closeDir(); // close trunk dir editor.closeDir(); // close root dir commitInfo = editor.closeEdit(); SVNWCClient wcClient = clientManager.getWCClient(); File workingDir = new File(cmConfig.getWorkingPath() + "/" + initialWcDir); } catch (SVNException svne) { Logger.getLogger(CMRepository.class.getName()).log(Level.SEVERE, null, svne); throw new Exception(svne); } return commitInfo.getNewRevision(); } Here is the complete text of the method I am executing when the checksum failure occurs: private long getFileContentsInner(String nodePath, long revision, String filePath) throws SVNException, Exception { if (!initialize()) { Logger.getLogger(CMRepository.class.getName()).log(Level.SEVERE, "Not initialized."); throw new Exception("Not initialized."); } FileOutputStream fileOStream = null; long fileBytes = 0; SVNURL url = null; try { SVNProperties fileProperties = new SVNProperties(); File oFile = new File(filePath); if (!oFile.exists()) { // Does mkdir for any missing parent directories FileUtils.forceMkdir(oFile.getParentFile()); oFile.createNewFile(); } fileOStream = new FileOutputStream(oFile); repository.getFile(fullNodePath, revision, fileProperties, fileOStream); System.out.println("filePath " + filePath); fileBytes = fileOStream.getChannel().size(); } catch (SVNException svne) { Logger.getLogger(CMRepository.class.getName()).log(Level.SEVERE, null, svne); throw svne; } catch (Exception err) { Logger.getLogger(CMRepository.class.getName()).log(Level.SEVERE, null, err); throw err; } finally { if (null != fileOStream) { fileOStream.close(); } } return fileBytes; } Here is the full stack trace: Apr 22, 2013 9:29:19 AM com.boeing.sis.mexsat.sra.Versionizer.CMRepository getFileContentsInner SEVERE: null org.tmatesoft.svn.core.SVNException: svn: E204899: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:85) at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:69) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:135) at org.tmatesoft.svn.core.internal.io.fs.FSRepository.getFile(FSRepository.java:236) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContentsInner(CMRepository.java:513) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContents(CMRepository.java:446) at TestCommitReplaceRetreive.TestCommitReplaceRetreive(TestCommitReplaceRetreive.java:86) at TestCommitReplaceRetreive.main(TestCommitReplaceRetreive.java:48) Caused by: java.io.IOException: svn: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.io.fs.FSInputStream.read(FSInputStream.java:100) at java.io.InputStream.read(InputStream.java:82) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:123) ... 5 more Apr 22, 2013 9:29:22 AM com.boeing.sis.mexsat.sra.Versionizer.CMRepository getFileContentsInner SEVERE: null org.tmatesoft.svn.core.SVNException: svn: E204899: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:85) at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:69) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:135) at org.tmatesoft.svn.core.internal.io.fs.FSRepository.getFile(FSRepository.java:236) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContentsInner(CMRepository.java:513) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContents(CMRepository.java:464) at TestCommitReplaceRetreive.TestCommitReplaceRetreive(TestCommitReplaceRetreive.java:86) at TestCommitReplaceRetreive.main(TestCommitReplaceRetreive.java:48) Caused by: java.io.IOException: svn: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.io.fs.FSInputStream.read(FSInputStream.java:100) at java.io.InputStream.read(InputStream.java:82) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:123) ... 5 more Apr 22, 2013 9:29:22 AM TestCommitReplaceRetreive TestCommitReplaceRetreive SEVERE: null org.tmatesoft.svn.core.SVNException: svn: E204899: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:85) at org.tmatesoft.svn.core.internal.wc.SVNErrorManager.error(SVNErrorManager.java:69) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:135) at org.tmatesoft.svn.core.internal.io.fs.FSRepository.getFile(FSRepository.java:236) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContentsInner(CMRepository.java:513) at com.boeing.sis.mexsat.sra.Versionizer.CMRepository.getFileContents(CMRepository.java:464) at TestCommitReplaceRetreive.TestCommitReplaceRetreive(TestCommitReplaceRetreive.java:86) at TestCommitReplaceRetreive.main(TestCommitReplaceRetreive.java:48) Caused by: java.io.IOException: svn: E160004: Checksum mismatch while reading representation: expected: 8a13225f35627a9fa78670a2475e14ea actual: 40b4eb0582fedfc7e455f435f73e7d3d at org.tmatesoft.svn.core.internal.io.fs.FSInputStream.read(FSInputStream.java:100) at java.io.InputStream.read(InputStream.java:82) at org.tmatesoft.svn.core.internal.io.fs.FSRepositoryUtil.copy(FSRepositoryUtil.java:123) ... 5 more -- View this message in context: http://subversion.1072662.n5.nabble.com/Unable-to-update-matlab-files-stored-with-svnkit-1-7-5-tp180148p180163.html Sent from the SVNKit - Users mailing list archive at Nabble.com.