Intermittent Run-time Error '75' Loading Form

Intermittent run-time error '75'
Could not find the specified object.

Debug shows VBA Code that simply loads a form called controls

Sub loadcontrols()
Load Controls
Controls.Show
End Sub

Generally works upon restart. Can load and unload the form numerous times. Seems loading the form after a few minutes results in the form failing to load generating the error. Found no consistent cause thus far.

Results in a hard crash: Restart Excel as only option.

The Form Code for Controls loads a modeless transaprent form. Has been working for months. Don't know if this error is new or has been there all along.

Option Explicit
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function GetWindowLong Lib "user32" Alias "GetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hWnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function DrawMenuBar Lib "user32" (ByVal hWnd As Long) As Long
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Const GWL_STYLE As Long = (-16)
Private wHandle As Long 'For moving the form
Private m_objCFormSkin As CFormSkin 'For transparancy