My FTB error log

FTBLaunch starting up (version 1.2.6) Java version: 1.7.0_25 Java vendor: Oracle Corporation Java home: C:\Program Files\Java\jre7 Java specification: Java Virtual Machine Specification version: 1.7 by Oracle Corporation Java vm: Java HotSpot(TM) Client VM version: 23.25-b01 by Oracle Corporation OS: x86 Windows XP 5.1 AnalyticsBackgroundThread started [i18n] Checking for updates ... [i18n] enUS English language file loaded!
[i18n] remoteVer = 10
[i18n] localVer = 10
[i18n] Files are up to date
[i18n] Fallback enUS loaded
[i18n] Added 0 enUS to options pane
[i18n] Added 1 cyGB to options pane
[i18n] Added 2 daDK to options pane
[i18n] Added 3 deDE to options pane
[i18n] Added 4 esES to options pane
[i18n] Added 5 frFR to options pane
[i18n] Added 6 itIT to options pane
[i18n] Added 7 maHU to options pane
[i18n] Added 8 nlNL to options pane
[i18n] Added 9 ptBR to options pane
[i18n] Added 10 ptPT to options pane
[i18n] Added 11 ruRU to options pane
[i18n] Added 12 svSE to options pane
[i18n] enUS English language file loaded!
Loading modpack information for modpacks.xml...
Adding pack 1
Adding pack 2
Adding pack 3
Adding pack 4
Adding pack 5
Adding pack 6
Adding pack 7
Adding pack 8
Adding pack 9
Adding pack 10
Adding pack 11
Adding pack 12
Adding pack 13
Adding pack 14
Adding pack 15
Adding pack 16
Adding pack 17
Adding pack 18
Adding pack 19
Adding pack 20
Adding pack 21
Adding pack 22
loading texture pack information...
loading map information...
Adding map 1
Adding map 2
Adding map 3
Adding texture pack 1
Adding texture pack 2
Adding map 4
Adding texture pack 3
Adding map 5
Adding map 6
Adding texture pack 4
Adding map 7
Adding map 8
Adding map 9
Adding map 10
Logging in...
Login complete.
Unhinged
Modpack is up to date.
dirs mk'd
Current: 1.5.2
Required: 1.5.2
Setting MinMemory to 256
Setting MaxMemory to 1024
Error occurred during initialization of VM
Could not reserve enough space for object heap