PIC单片机

用MPLAB IDE V860打开出现的窗口，然后建立工程后，编辑又出现这样的文字：
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Debug build of project `D:DocumentsDesktop4.mcp' started.
Language tool versions: MPASMWIN.exe v5.37, mplink.exe v4.37, mplib.exe v4.37
Preprocessor symbol `__DEBUG' is defined.
Wed Apr 11 17:53:19 2012
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Clean: Deleting intermediary and output files.
Clean: Deleted file "D:DocumentsDesktop4.mcs".
Clean: Done.
Skipping file.  There is no tool to process the file with the given suffix.
Halting build on first failure as requested.
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Debug build of project `D:DocumentsDesktop4.mcp' failed.
Language tool versions: MPASMWIN.exe v5.37, mplink.exe v4.37, mplib.exe v4.37
Preprocessor symbol `__DEBUG' is defined.
Wed Apr 11 17:53:19 2012
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BUILD FAILED



现在确定程序是没问题的，不知道是不是开发环境的问题，因为原来那个不能用了。我重新下载的一个开发环境。之前以为是没有装PICC，但是别找了PICC安装后，还是如此。