Hi, just some random comments that came up while trying to debug your problem. Others already found your problem, but maybe this is useful as well:

• pack(side=>'top') doesn't work on my computer, I had to change this to pack(-side=>'top')
• Why don't you use Tk::Entry instead of Tk::Text? Tk::Entry is more lightweight than Tk::Text and offers everything you need in this code.

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