The API works fine on Windows, but not on the AS/400 (our Production environment), because of missing Fonts (as indicated by the Exception that's thrown).
Cannot found font installed on the system.
at com.spire.xls.packages.sprnZb.spr (Unknown Source)
In the API, there's a method on the Workbook Class called setCustomFontFilePaths() that I'm considering trying to use to solve this problem.
I've found documentation for Fonts on the AS/400 that seems to indicate which paths to use for Fonts on the AS/400 -- at least generally. So, I'm tentatively planning on trying that.
I presume there will be licensing-issues involved in installing Windows Fonts on the AS/400.
In any case, if anybody has any experience relevant to this issue, I'd like to hear from you.