Hi! I’m trying to run s3pe_13-1112-2033.7z on a mac using mono. But every time I try to run it i get an error - I’ve run other programs through it before with no problem. Please help! I can’t find anything online. The following is what shows up :

00000000 call Settings S3PIDemoFE.Properties.Settings:get_Default ()
00000005 callvirt Boolean S3PIDemoFE.Properties.Settings:get_UpgradeRequired ()
0000000a brfalse.s 00000044
0000000c call Settings S3PIDemoFE.Properties.Settings:get_Default ()
00000011 callvirt Void System.Configuration.ApplicationSettingsBase:Upgrade ()
00000016 call Settings S3PIDemoFE.Properties.Settings:get_Default ()
0000001b callvirt Void System.Configuration.ApplicationSettingsBase:Reload ()
00000020 leave.s 0000002f
00000022 pop
00000023 call Settings S3PIDemoFE.Properties.Settings:get_Default ()
00000028 callvirt Void System.Configuration.ApplicationSettingsBase:Reset ()
0000002d leave.s 0000002f
0000002f call Settings S3PIDemoFE.Properties.Settings:get_Default ()
00000034 ldc.i4.0
00000035 callvirt Void S3PIDemoFE.Properties.Settings:set_UpgradeRequired (Boolean)
0000003a call Settings S3PIDemoFE.Properties.Settings:get_Default ()
0000003f callvirt Void System.Configuration.SettingsBase:Save ()
00000044 ret

First i have to admit i am not using a mac for sims or the related mac programs but at least i found these two "guides for mac users" i would like to show you
Using Sims 3 Utilities on a Mac: extracting, cleaning, organizing and merging custom content + How to use dashboard and S3PE on a mac: a (hopefully) simplistic guide.
and if you run into troubles with a program you should always try to contact the persons who created it (e.p. here the S3PE help forum at simlogical) s3pe Downloads and !Support!