@Anonymous Monk, thanks a lot for the guidance. I tested the modified code with a MDI file that already has OCR information like so: 
$miDoc->Create('OCR-test-result.mdi');
my $OCRresult = $miDoc->{Images}->Item(0)->{Layout}{Text};
print $OCRresult;

[download]
It outputs the expected result. But if I retain the OCR method like the original code did: 
$miDoc->Create('OCR-test.tif');
$miDoc->OCR(LangId =>'miLANG_ENGLISH');
my $OCRresult = $miDoc->{Images}->Item(0)->{Layout}{Text};
print $OCRresult;

[download]
Perl throws me the same error message: Use of uninitialized value $OCRresult in print

So now it looks like there's also something wrong with this line: 

 
$miDoc->OCR(LangId =>'miLANG_ENGLISH');

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What diagnostic method can I use to solve the problem. The following code gives me nothing: 
eval {$miDoc->OCR(LangId =>'miLANG_ENGLISH')}; 
warn $@ if $@;

[download]
Thanks again :)

In reply to Re^4: Why the Create method keep failing using Office 2007 OCR API? by ZJ.Mike.2009
in thread Why the Create method keep failing using Office 2007 OCR API? by ZJ.Mike.2009

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