Help with installation, please!

I just discovered this amazing forum earlier today and have been trying all day since to get Shandalar up and running on my Windows 7 64-bit PC. I've followed CirothUngol's instructions step by step--these instructions, to be clear (copied directly from CU's post):
1) Download and extract Manalink3_20150325.7z found at one of the links in my signature.
2) Start Manalink_Launcher.cmd to install the default Mods for Manalink. It contains the latest 'Fate Reforged' patch, but with No CardArt. If you'd like CardArt, use Sonic's latest image archives found here.
3) Download Add_Shandalar_LoremastersTower2_preAlpha.7z from the same folder, place it in the '\Manalink3\' folder created by the previous archive, and extract it in place to update the '\Program\' folder with all of the Shandalar goodness. This archive contains the clean files from the Shandalar_2012 install + Korath's updated files for 'LoremastersTower2_preAlpha'.
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However, once I start a new game, I can choose difficulty and wizard color, but then I get an "Assertion Error" and says: File-> D:\NewMagic\sources\sidlib\lib.c, Line-> 315 WM_CREATE CreateDIBSection
Then if I hit OK to close the Assertion Error window, it advances to the character selection screen but it doesn't look right and I can't do anything else but close the game. I'd post a link to a screen cap to show what I'm talking about but being a new user I can't link to an outside page. At this point I've even tried using an older version just to see if I can get the game to work. I got the same Assertion Error when I tried an older Shandalar 2012 version from one of CirothUngol's older posts where somebody asked for help to simply install the game so they could play it (even without all the improvements). I've tried re-booting after each attempt to install the game, but still get the same error. I've also tried making a folder that is NOT 'Read-Only' but every time I try, the read only box is checked again when I open the folder's Properties. I've also tried running Shandalar.exe as administrator with no difference in results.
Please help! I haven't played this game in sooooo long and I'm frankly amazed and over-joyed to see there's a whole community that loves the game as much (or even more so) than I do! I can't wait to be back in Shandalar!!!
Thanks for any/all help!
Trevor
1) Download and extract Manalink3_20150325.7z found at one of the links in my signature.
2) Start Manalink_Launcher.cmd to install the default Mods for Manalink. It contains the latest 'Fate Reforged' patch, but with No CardArt. If you'd like CardArt, use Sonic's latest image archives found here.
3) Download Add_Shandalar_LoremastersTower2_preAlpha.7z from the same folder, place it in the '\Manalink3\' folder created by the previous archive, and extract it in place to update the '\Program\' folder with all of the Shandalar goodness. This archive contains the clean files from the Shandalar_2012 install + Korath's updated files for 'LoremastersTower2_preAlpha'.
--------------------------------------------------
However, once I start a new game, I can choose difficulty and wizard color, but then I get an "Assertion Error" and says: File-> D:\NewMagic\sources\sidlib\lib.c, Line-> 315 WM_CREATE CreateDIBSection
Then if I hit OK to close the Assertion Error window, it advances to the character selection screen but it doesn't look right and I can't do anything else but close the game. I'd post a link to a screen cap to show what I'm talking about but being a new user I can't link to an outside page. At this point I've even tried using an older version just to see if I can get the game to work. I got the same Assertion Error when I tried an older Shandalar 2012 version from one of CirothUngol's older posts where somebody asked for help to simply install the game so they could play it (even without all the improvements). I've tried re-booting after each attempt to install the game, but still get the same error. I've also tried making a folder that is NOT 'Read-Only' but every time I try, the read only box is checked again when I open the folder's Properties. I've also tried running Shandalar.exe as administrator with no difference in results.
Please help! I haven't played this game in sooooo long and I'm frankly amazed and over-joyed to see there's a whole community that loves the game as much (or even more so) than I do! I can't wait to be back in Shandalar!!!
Thanks for any/all help!
Trevor