MathPSFrag，边界框

Question

我一直在尝试使用 MathPSFrag 包来获取我们梦寐以求的一些超级漂亮的数字。在运行 MathPSFrag-Test.nb 时，我通过了所有测试，但尝试一个简单的绘图并通过以下 .nb 导出它时崩溃了

Needs["MathPSfrag`"];

myplot = Plot[Sin[x], {x, 0, 2 Pi}, Frame -> True]

PSfragExport["myfilename", myplot] // UnPSfrag


StringForm::sfq: "Unmatched backquote in "`Could not determine bounding box from file `1` in directory `2`. I intentionally did not clean up temporary files, which will have to be removed manually."

UnPSfrag::bboxfailed: `Could not determine bounding box from file `1` in directory `2`. I intentionally did not clean up temporary files, which will have to be removed manually.

$Aborted

psfrag 的输入 eps 看起来不错，但在我运行 psfrag 命令并查看输出 eps 文件（根据 MathPSFrag 术语，未经过碎片化）后，你们有人对如何使这个边界框变大有什么建议吗？非常感谢大家的帮助。