當注冊碼失效時，會出現以下界面
解決方法如下：
1.找到bcompare所在位置
sudo find /home/ -name "*bcompare"
>>>/home/igs/.config/bcompare
2.進入目錄/home/igs/.config/，刪除整個文件夾：bcompare
rm -rf bcompare
3.進入beyondcompare安裝目錄
cd /usr/lib/beyondcompare
4.輸入以下內容：
sudo sed -i "s/keexjEP3t4Mue23hrnuPtY4TdcsqNiJL-5174TsUdLmJSIXKfG2NGPwBL6vnRPddT7tH29qpkneX63DO9ECSPE9rzY1zhThHERg8lHM9IBFT+rVuiY823aQJuqzxCKIE1bcDqM4wgW01FH6oCBP1G4ub01xmb4BGSUG6ZrjxWHJyNLyIlGvOhoY2HAYzEtzYGwxFZn2JZ66o4RONkXjX0DF9EzsdUef3UAS+JQ+fCYReLawdjEe6tXCv88GKaaPKWxCeaUL9PejICQgRQOLGOZtZQkLgAelrOtehxz5ANOOqCaJgy2mJLQVLM5SJ9Dli909c5ybvEhVmIC0dc9dWH+/N9KmiLVlKMU7RJqnE+WXEEPI1SgglmfmLc1yVH7dqBb9ehOoKG9UE+HAE1YvH1XX2XVGeEqYUY-Tsk7YBTz0WpSpoYyPgx6Iki5KLtQ5G-aKP9eysnkuOAkrvHU8bLbGtZteGwJarev03PhfCioJL4OSqsmQGEvDbHFEbNl1qJtdwEriR+VNZts9vNNLk7UGfeNwIiqpxjk4Mn09nmSd8FhM4ifvcaIbNCRoMPGl6KU12iseSe+w+1kFsLhX+OhQM8WXcWV10cGqBzQE9OqOLUcg9n0krrR3KrohstS9smTwEx9olyLYppvC0p5i7dAx2deWvM1ZxKNs0BvcXGukR+/g" BCompare
3.打開beyondcompare，彈出Trial mode error,如下圖：
點擊enter Key...按鈕，輸入以下秘鑰：注意，包含以下所有內容：
--- BEGIN LICENSE KEY ---
GXN1eh9FbDiX1ACdd7XKMV7hL7x0ClBJLUJ-zFfKofjaj2yxE53xauIfkqZ8FoLpcZ0Ux6McTyNmODDSvSIHLYhg1QkTxjCeSCk6ARz0ABJcnUmd3dZYJNWFyJun14rmGByRnVPL49QH+Rs0kjRGKCB-cb8IT4Gf0Ue9WMQ1A6t31MO9jmjoYUeoUmbeAQSofvuK8GN1rLRv7WXfUJ0uyvYlGLqzq1ZoJAJDyo0Kdr4ThF-IXcv2cxVyWVW1SaMq8GFosDEGThnY7C-SgNXW30jqAOgiRjKKRX9RuNeDMFqgP2cuf0NMvyMrMScnM1ZyiAaJJtzbxqN5hZOMClUTE+++
--- END LICENSE KEY -----
破解成功！