This issue has been reported by others already, but thanks anyway.

@nm That's wrong, of course. There is a QA department, there are automated tests being run each night, there's additional testing by others, there is a beta program, there is feedback via tech support and via this forum. And so on.

No testing effort can cover everything. I'm sure you know that.

@JAMET As I wrote before: your linear equations are contradictory, so solve cannot return anything. Hence assign emits an error message.

@acer I couldn't agree more! Also, I'm glad we never introduced corp for ending a proc definition. ;-)

@MAXR That still contains the syntax errors I mentioned. Sorry, I cannot help here.

@MAXR Could you upload your edited mw file, please?

For each scalar multiplication in eqn1, you will need to replace the dot by an asterisk (which is displayed as a centered dot in 2D Math).
Next, replace F[s] by F__s and D[a] by D__a both in eqn1 and in sys1. Double underscores denote a literal index.

Then let us know if the error persists (I don't have Maple 17 installed anymore).

@FDS My simple example is this one (the output is not rendered completely in MaplePrimes):

Download Excel-Import-DataFrame.mw

How does yours differ then?

@nm The odetest situation may be okay - but how often does one need to feed a solution that's not coming from dsolve?

Anyway, using _Cn is not good either, and I think that's why Edgardo introduced the new arbitraryconstants option to dsolve a while ago.

Apart from that, I see no reason to use underlined symbols in user code. Just follow the advice from the help page.

@sursumCorda I don't know, sorry. All I can say is that the font is not configurable via Maple's GUI settings (Maple.ini under Windows). That the two editor variants use different fonts may be intentional.

@nm No, it's not possible to achieve everything with a single command, mainly because the goal is not well-defined. You have to learn some (more or less specialized) tools, just like you did with Together.

@C_R Feel free to submit an SCR (Software Change Request) via MaplePrimes' Tools menu.

Please upload your worksheet (mw file), using the green arrow-up button of the message editor.

Screenshots are useful for illustrating graphical problems mainly.

@mmcdara Very smart - appreciated!

I had a similar issue when using an external monitor for my office laptop. If the desktop was extended (as opposed to duplicating the laptop screen), it helped to drag the Maple window between the displays. Apparently a redraw was initiated when a different resolution was used.