Sometimes (for various reasons) when user tries to update CRM 2011 workflow, we see it displays Red cross mark and says it’s Invalid Condition Expression as shown below.
This post will provide small trick to resolve this.
Solution
I recently found small workaround to fix this issue this is to add any new condition and then just delete the same condition and this resolve the issue as shown below.
Step 1: in the workflow above or below add condition at any of exisitng step as shown below
Step 2: This will fix this issue and then just delete the condition added in above step.
If issue still persists then this mean of the steps got wrong parameter so please fix this particular step and it will fix this issue.
Hope this helps…
Cheers,
MayankP 
