My steps..
Downloaded your file here and the newest file from the other thread extracted to eHome.
Ran smartguide and then Channel Editor didnt put any fequencies in the db and saved.
Ran the frequencies.reg that got created.
First button didnt work at first but i clicked on Channel Editor and resorted them dont know if this made it work or not.
1. Webguide2MCE!
First time
2. LoadGuide from XML
I am sorry something went wrong:
Must initialize guide before use
3. Guide Browser
4. Initialize
5. Webguide2MCE!
6. LoadGuide from XML
I am sorry something went wrong:
Object reference not set to an instance of an object
But it seems like the info is in there..
Yes I have tried to reg that file it doesnt seem to help though.
Can you compare my reg to yours? Dont know if the reg entry TOSAgreed was there before as i just ran your reg file before checking my registry.
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Service\EPG]
"atsc"=dword:00000001
"discSvc"="https://go.microsoft.com/fwlink/?linkid=23207&clcid=0x409"
"clientVersion"="2.0"
"prefsVersion"="2.0"
"currentEpg"="C:\\Documents and Settings\\All Users\\Application Data\\Microsoft\\eHome\\EPG\\a88d42596ef84e15b09d22a912ae9305.sdf"
"xnType"=dword:00000003
"xnName"="LAN connection"
"regionTuningCode"="SE"
"hnt"=dword:00000003
"TOSAgreed"=dword:00000001
"tosl"="1.0"
"tosla"="1.0"
"dl"=dword:00000000
"origGeoId"="457 93"
"geoId"="125 01"
"country"="se"
"languageId"="sv"
"lastError"=dword:0000001e
"dlRegTime"=hex(b):c5,00,5c,0e,bf,b5,c4,01
"dlPeriod"=dword:00000001
"dlCycles"=dword:00000001
"dlLastTime"=hex:a8,4b,e5,20,e5,b4,c4,01
"clientid"="995f314c07244b3ea5cf63a0b817862e"
Update:
TOSAgreed must be set to 1 otherwise the channels wont show up in mce under "Edit Channels"
I still cant get to the guide though 
UPDATE2: How to enable guide in unsupported countries!!!
Fire upp regedit and locate:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Media Center\Settings\ProgramGuide
Change theese entries to "1"
"***reeTOS"=dword:00000001
"***reeEPGPrivacy"=dword:00000001
"fGetEpgData"=dword:00000001
"fEpgDataAvailable"=dword:00000001
DONE!!