Unknown error -50 converting midi file

I'm trying to convert some midi files I made to mp3's so I can burn them to a disk. When I select "convert to mp3" from the Advanced menu I get an "unknown error (-50)" message. I've tried this on my iMac and on a Win2K laptop with the same results. I've successfully converted midi files in the past, so I'm not sure what's wrong now. I have iTunes 6 on both machines. My iMac is running the latest update of Mac OSX version 3. Any ideas what this error code means, or how to get around it?

Nope. For example the album where tracks 11 & 12 wouldn't convert: track 11 is titled "The End Has No End". All other details (artist, album, genre, artwork, etc) are identical to tracks 1-12 & track 13. Yet track 11 wouldn't convert, throwing up the error message when the progress bar was about 25% of the way up, but tracks 1-10 and track 13 convert fine
Which leads me to another point that makes me think it can't be what you suggested - namely that track 11 fails about 25% of the way up the progress bar, yet track 12 fails AS SOON as I choose "Convert to AAC". If the problem was related to file name characters or whatever you'd expect both of them to fail at the same point, presuming iTunes writes name/tag information at the same point for every file (start or end I'd presume).
Thanks anyway. Anyone else got any ideas?

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I have been converting MIDI files into MP3 and AAC formats with iTunes without any problems for almost a year. Suddenly, after the latest upgrage, iTunes will no longer perform this function and instead reads "An error occured while converting the file "". An unknown error occured (-50)"
How can I fix this problem?

I have some purchased songs which will no longer play. I have tryed deauthenticate computer then authenticate comput. upgrade to v9.0.3 if itunes. have tried deleting the hidden folder/files under all users etc..None of these actions have workedamd despite several attempts to get some more suggestions via support, just keep being given the same information. What else can I try please? Notice a few people are getting similar issues lately is there a general problem?

I can't Convert midi files into any other format

A few months ago, I was able to convert midi files into mp3 when one day, I updated iTunes using software update. Ever since the updates I had for my Mac it still hasn't work.
It has this error that won't allow me to convert. I talked to my friend wrldwzrd89 who is one of my friends and he said that it is because Apple had a piece of data missing allowing midis to be converted to mp3, or any other format.
Is this true or do you know the solution?

I can't tell you the exact reason why it doesn't work, but there is an article about this problem and a solution if you have QuickTime Pro:
iTunes: MIDI files cannot be converted in iTunes 6.0.3 and 6.0.4
Not the last sentence in the article. That usually means they're working on a fix.
No guarantee that it will be fixed in the next version however. We'll have to wait and see.
Hope this helps.
M
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error while converting *.class file to *.exp and *.jca file
=====================================================================================================================
linux-y60u:/home/admin/java_card_kit-2_2_1/samples/src # converter -exportpath "/home/admin/java_card_kit-2_2_1/lib/" com/sun/javacard/samples/HelloWorld 0x00:0x01:0x02:0x03:0x04:0x05:0x06:0x07:0x0b 1.0 -v -applet 0x00:0x01:0x02:0x03:0x04:0x05:0x06:0x07:0x0b:0x01 Identity
Java Card 2.2.1 Class File Converter, Version 1.3
Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
parsing /home/admin/java_card_kit-2_2_1/samples/src/com/sun/javacard/samples/HelloWorld/HelloWorld.class
parsing /home/admin/java_card_kit-2_2_1/samples/src/com/sun/javacard/samples/HelloWorld/Identity.class
error: com.sun.javacard.samples.HelloWorld.HelloWorld: unsupported class file format of version 50.0.
error: com.sun.javacard.samples.HelloWorld.Identity: unsupported class file format of version 50.0.
conversion completed with 2 errors and 0 warnings.
=====================================================================================================================

i compile a file javacard use this command:
===
javac -source 1.3 -target 1.1 -g -classpath ./classes:../lib/api.jar:../lib/installer.jar src/com/sun/javacard/samples/Identity/Identity.java
===
and try to convert this class use this command
===
/home/xnuxerx/admin/java_card_kit-2_2_1/bin/converter -exportpath "/home/xnuxerx/admin/java_card_kit-2_2_1/lib/" com/sun/javacard/samples/Identity 0x00:0x01:0x02:0x03:0x04:0x05:0x06:0x07:0x0b 1.0 -v -applet 0x00:0x01:0x02:0x03:0x04:0x05:0x06:0x07:0x0b:0x01 Identity
===
result convert:
===
Java Card 2.2.1 Class File Converter, Version 1.3
Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.
parsing /home/xnuxerx/admin/java_card_kit-2_2_1/samples/classes/com/sun/javacard/samples/Identity/Identity.class
converting com.sun.javacard.samples.Identity.Identity
error: export file framework.exp of package javacard.framework not found.
conversion completed with 1 errors and 0 warnings.
===
why ??
please your comment for this problem.
thank 4 all.

Adobe Acrobat XI pro version, Windows 7, running on iMac parallels, converting pdf to a pdf with reduced size is not possible, error: error in converting the file! What to do? Its a bit annoying not to be able to store pdf files in reduced size, any idea?

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iTunes for Windows: iTunes Diagnostics, CD/DVD Drive Tests - Apple Support
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This is a bit complicated, conceptually.
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I get an error when I try to put MIDI files on my Ipod or convert them to AAC or mp3. Any word on when this bug will be fixed?

I don't have Midi files, but recently have read some topics about them.
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Hope this helps.
M
17' iMac fp 800 MHz 768 MB RAM Mac OS X (10.3.9) Several ext. HD (backup and data)

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Unknown error -50 converting midi file

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