编译错误，求助！

wdb_9955

Arduino:1.5.5-r2 (Windows XP), 板："Arduino Uno"

In file included from C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Ethernet.h:5,
                 from sketch_nov25a.ino:1:
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Client.h:22: error: conflicting return type specified for 'virtual void Client::write(uint8_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\hardware\arduino\avr\cores\arduino/Print.h:48: error:   overriding 'virtual size_t Print::write(uint8_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Client.h:24: error: conflicting return type specified for 'virtual void Client::write(const uint8_t*, size_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\hardware\arduino\avr\cores\arduino/Print.h:53: error:   overriding 'virtual size_t Print::write(const uint8_t*, size_t)'
In file included from C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Ethernet.h:6,
                 from sketch_nov25a.ino:1:
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Server.h:16: error: conflicting return type specified for 'virtual void Server::write(uint8_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\hardware\arduino\avr\cores\arduino/Print.h:48: error:   overriding 'virtual size_t Print::write(uint8_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\libraries\ENC28J60/Server.h:18: error: conflicting return type specified for 'virtual void Server::write(const uint8_t*, size_t)'
C:\Documents and Settings\Administrator\桌面\arduino-1.5.5-r2\hardware\arduino\avr\cores\arduino/Print.h:53: error:   overriding 'virtual size_t Print::write(const uint8_t*, size_t)'

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求高手帮助理解下上面的错误信息。谢谢！