ERROR A problem occurred

[msidir...@gmail.com]

I am working  on a computer (windows 7) belonging to a domain group. When I login as an administrator , there is no problem in the digital signature but when i login as user there is problem. The same user on another similar computer works well

"ERROR  A problem occurred
java.io.IOException: PDF header signature not found.
    at com.lowagie.text.pdf.PRTokeniser.checkPdfHeader(Unknown Source)
    at com.lowagie.text.pdf.PdfReader.readPdf(Unknown Source)
    at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
    at com.lowagie.text.pdf.PdfReader.<init>(Unknown Source)
    at net.sf.jsignpdf.SignerLogic.signFile(SignerLogic.java:152)
    at net.sf.jsignpdf.SignerLogic.run(SignerLogic.java:114)
    at java.lang.Thread.run(Unknown Source)"

Can somebody help me?

[Josef Cacek]

The provided message seems like the input file has a wrong format.

Are you sure, your input PDF file is valid? Have you tried the same
file on all machines?
--jc

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[msidir...@gmail.com]

Thank for your responce. My input file is valid. I try the same file in other similar pc and its everything ok. Also When I
 login as an administrator , there is no problem in the digital signature with the same file but

when i login as user there is problem.

[Josef Cacek]

Then it rather seems as a problem with access permissions to the given file.

You could try to configure the JSignPdf application to run with
administrator privileges, but I'm not a Windows expert, so I don't
have a hint how to do it.

-- jc