diff --git a/DTLib/DTLib.csproj b/DTLib/DTLib.csproj
index 4f84074..d3a3feb 100644
--- a/DTLib/DTLib.csproj
+++ b/DTLib/DTLib.csproj
@@ -2,7 +2,7 @@
 	<PropertyGroup>
 		<!--package info-->
 		<PackageId>DTLib</PackageId>
-		<Version>1.1.5</Version>
+		<Version>1.1.7</Version>
 		<Authors>Timerix</Authors>
 		<Description>Library for all my C# projects</Description>
 		<RepositoryType>GIT</RepositoryType>
diff --git a/DTLib/Filesystem/IOPath.cs b/DTLib/Filesystem/IOPath.cs
index eff25f9..d06c9ca 100644
--- a/DTLib/Filesystem/IOPath.cs
+++ b/DTLib/Filesystem/IOPath.cs
@@ -20,6 +20,8 @@ public readonly struct IOPath
     
     public IOPath(string path, bool separatorsFixed=false)
     {
+        if (path.IsNullOrEmpty())
+            throw new Exception("path is null or empty");
         Str = separatorsFixed ? path : FixSeparators(path.ToCharArray());
     }
 
diff --git a/DTLib/Filesystem/Path.cs b/DTLib/Filesystem/Path.cs
index 1c4dff6..e066c52 100644
--- a/DTLib/Filesystem/Path.cs
+++ b/DTLib/Filesystem/Path.cs
@@ -32,13 +32,14 @@ public static class Path
                 case ':': case ';':
                     r[i] = '-';
                     break;
-                case '\n': case '\r': case ' ':
-                case '#': case '%': case '&':
-                case '{': case '}': case '<':
-                case '>': case '*': case '?':
-                case '$': case '!': case '\'':
-                case '"': case '@': case '+':
-                case '`': case '|': case '=':
+                case '\n': case '\r':  case '\'': 
+                case '"': case '`':
+                    break;
+                case ' ': case '&': case '{': case '}': 
+                case '<': case '>': case '*': case '?':
+                case '$': case '%': case '@': case '|':
+                // case '!':
+                // case '#':
                     r[i] = '_';
                     break;
             }