Guide viewer errors when auto-scrolling

[japp1egate]

When loading a partially-completed guide, or when right-clicking the "Next step" button, which would cause the guide to scroll through already-completed content, I am getting a large (and continuously-growing, while viewer is visible) number of errors pertaining to viewerframe.lua. Error text is below, as captured using the buggrabber addon.

2569x ...dOns/ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1506: attempt to index field 'Scroll' (a nil value)
[string "@ZygorGuidesViewer/Skins/Default/ViewerFrame.lua"]:1506: in function <...dOns/ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1453>

Locals:
self = ZygorGuidesViewerFrame {
0 = <userdata>
oldyPos = 0
UpdateLocking = <function> defined @ZygorGuidesViewer/Skins/Default/Skin.lua:150
MiniButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2148
stickySepPool = <table> {
}
CloseButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2183
StopMovingOrSizing = <function> defined =[C]:-1
NextButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2075
OnShow = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1368
ReportButton_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2127
GuideShareButton_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2141
mouseCount = 0
SetSpecialState = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1726
ResizerBottom = Frame {
}
stepFramePools = <table> {
}
bdflash = ZygorGuidesViewerFrame_bdflash {
}
StartSizing = <function> defined =[C]:-1
Scroll_Slider_OnValueChanged = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2209
ResizerRight = Frame {
}
ReportButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2123
MenuHostSettings = Frame {
}
ShowSpecialState = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1731
HelpButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2109
Scroll_OnUpdate = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2198
ThinFlash = Frame {
}
HideRemainingSteps = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1385
OnLoad = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1164
ResizerLeft = Frame {
}
StopFlashAnimation = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1687
ResetWindow = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1702
AlignFrame = <function> defined @ZygorGuidesViewer/Skins/Default/Skin.lua:180
Notifications_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2042
leftCount = 0
specialstate = "normal"
NextButtonSpecial_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2093
OnSizeChanged = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1613
ThinFlash_OnLoad = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2226
NextButton_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2085
HelpButton_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2115
Border = Frame {
}
NextButtonSpecial_OnEnter = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2096
StepNum_OnMouseWheel = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2214
skin = <table> {
}
ReportStepButton_OnClick = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:2189
OnUpdate = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1453
everything = <table> {
}
ResizerBottomLeft = Frame {
}
oldWidth = 449.333435
oldxPos = 0
MenuHostGuides = Frame {
}
ProgressBar = Button {
}
CreateStepPools = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1348
PixelSnapDisabled = true
ApplySkin = <function> defined @ZygorGuidesViewer/Skins/Default/Skin.lua:34
AddStep = <function> defined @ZygorGuidesViewer/Skins/Default/ViewerFrame.lua:1391
MiniButton_OnEnter = <

[ZG Support 1]

First, if you use widgets go into the Profile section of the guide viewer settings in game and click on Backup. That should give you a string that you can copy/paste into a text file on your computer to save it. Then do the following steps to do a full guide reset:

1. exit WoW
2. go to the WoW/_retail_/Interface/Addons folder and delete any Zygor folders
3. go to the WoW/_retail_/WTF/Account/<your account name here>/SavedVariables folder and delete the Zygor files in there
4. run the desktop client and install a fresh copy of the guides
5. go back in game to test and see if that fixed it

If that fixed it then you can go back into the guide viewer settings and in the Profile section you can paste that backup string into the box at the bottom and click on Restore. That will restore your widget layout and data.