@dts errors and dependent cells not updating

[jdrowell]

I was working on the attached file (renamed to .txt to be able to attach), and all formulas were working. It basically has a new line for each month, and calculates the next month by getting the previous date, adding 31 days, and extracting @year and @month from that. Then another @dts is called to manufacture the first day of that month.

After quitting sc-im and reopening it with that file, I get these errors:

@dts: invalid argument or date out of range

I can use "q" to skip an error, but there is one error for each line of the spreadsheet. After it finally opens, the updates don't cascade properly. If I update the first month to "1", only the next line is recalculated. If I update it to "1" again, then the 3rd line is also updated. So a lot of functionality is broken in this scenario.

I had the problem when running v8.3, upgraded to v8.4 but there was no visible improvement.

fina.sc.txt

[jdrowell]

I just changed it to use @if for calculating the next year and month (instead of @year and @month), and still get the same @dts error. It seems that any time I use @dts using cell references instead of hard coded values it gives that error when I reopen the sheet.