Erro ao carregar arquivo em FTP

Pessoal,

estou fazendo upload de arquivos em um servidor FTP e está sendo exibido essa mensabem para mim:

        java.io.IOException: Error writing file. The disk may be full, or access may be restricted.
        at com.flashline.cmee.util.MultipartMimeDecoder.getContentInfo(MultipartMimeDecoder.java:359)
        at com.flashline.cmee.util.MultipartMimeDecoder.parseMulti(MultipartMimeDecoder.java:416)
        at com.flashline.cmee.util.MultipartMimeDecoder.init(MultipartMimeDecoder.java:115)
        at com.flashline.cmee.servlet.enterprisetab.FileUpload.service(FileUpload.java:100)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
        at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
        at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3498)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(Unknown Source)
        at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
        at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
        at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)

Porém, o servidor não está cheio e tenho permissão total.

Alguma dica?

Obrigado