R - Error: IllegalArgumentException (Java): Your InputStream was neither an OLE2 stream, nor an OOXML stream -

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i use r xlconnect package. when wrote 'xlconnect' function, such loadworkbook(), readworksheetfromfile() etc. , error message happen.

error: illegalargumentexception (java): inputstream neither ole2 stream, nor ooxml stream

how solve problem?

before using function, took action against crashing between r , mac os x way http://www.r-bloggers.com/getting-r-and-java-1-8-to-work-together-on-osx/ link told.

i have used mac os x.

this message states file have provided loadworkbook has not been recognized *.xls (biff-8) or *.xlsx (ooxml) file.


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