请问为何使用MPA7.1R1分析变形跟收缩会出现错误信息

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<p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><font size="3"><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">请问各位前辈为何使用</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">MPA7.1R1</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">分析</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">(</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">变形跟收缩</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">)</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">会出现错误信息，且中断分析，是因为软件有问题还是</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">CARCK</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">有问题</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">?</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">我下载的安装程序仅有</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">70MB</span><span lang="ZH-CN" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">这是试用版还是正式版的呢</span><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;">?</span></font></p><font size="3"><span lang="EN-US" style="FONT-FAMILY: SimSun; mso-fareast-language: ZH-CN;"><p class="MsoNormal" style="MARGIN: 0cm 0cm 0pt;"><span style="FONT-FAMILY: SimSun;">谢谢<span lang="EN-US"><p></p></span></span></p><p></p></span></font>